TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Radojković, Bojana
AU  - Alić, Behar
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2283
AB  - The resistance of X5CrNi18-10 stainless steel to pitting corrosion in a solution containing chlorides and sulphates was tested using the potentiodynamic polarization method. The obtained results show that the stainless steel is significantly resistant to pit formation, but it is susceptible to pit growth and crevice corrosion. Pits formed at the corrosion potential grow continuously. Statistical analysis of the results obtained during pitting corrosion testing was performed. It can be assumed with a probability of 95% that values of indicators of resistance to pit formation (the pitting potential Epit, the metastable pitting potential Empit and the difference Epit-Ekor) will be within the range of several percents. Values of indicators of resistance to pit growth (the amount of charge required for the pit growth q, the protective potential Eprot and the difference Epit-Eprot) will be within the broader range. In addition, the appearance of pits on the surface of the stainless steel, as well as the appearance of the pits bottom, were analyzed. It was shown that the structure of the stainless steel tested was not sensitized to pitting and intergranular corrosion, which means that the stainless steel was not previously thermally treated.
AB  - Primenom potenciodinamičke metode ispitana je otpornost nerđajućeg čelika X5CrNi18-10 na piting koroziju, u rastvoru koji sadrži hloride i sulfate. Dobijeni rezultati pokazuju da je nerđajući čelik u značajnoj meri otporan prema formiranju pitova, ali postoji sklonost prema rastu pitova i koroziji u zazorima. Pitovi formirani na korozionom potencijalu nastavljaju stabilno da rastu. Izvršena je statistička analiza rezultata dobijenih pri ispitivanju piting korozije. Pokazano je da će se sa verovatnoćom od 95 % vrednosti pokazatelja otpornosti nerđajućeg čelika prema formiranju pitova (potencijal pitinga Epit, potencijal metastabilnog pitinga Empit i razlika Epit-Ekor) nalaziti u granicama od nekoliko procenata. Vrednosti pokazatelja otpornosti nerđajućeg čelika prema rastu pitova (količina naelektrisanja potrebna za rast pitova q, zaštitni potencijal Eprot i razlika Epit-Eprot) će se nalaziti u širim granicama. Pored navedenog, analiziran je izgled pitova na površini nerđajućeg čelika, kao i izgled dna pitova. Pokazano je da struktura ispitivanog nerđajućeg čelika nije senzibilizovana prema piting i interkristalnoj koroziji, odnosno da nerđajući čelik nije bio prethodno termički tretiran.
PB  - Belgrade, Serbia : Engineering Society for Corrosion
T2  - Zaštita materijala
T1  - Formation and growth of pits on X5CrNi18-10 austenitic stainless steel in presence of chlorides and sulphates
T1  - Formiranje i rast pitova na austenitnom nerđajućem čeliku X5CrNi18-10 u prisustvu hlorida i sulfata
VL  - 59
IS  - 1
SP  - 92
EP  - 99
DO  - 10.5937/ZasMat1801094J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Radojković, Bojana and Alić, Behar",
year = "2018",
abstract = "The resistance of X5CrNi18-10 stainless steel to pitting corrosion in a solution containing chlorides and sulphates was tested using the potentiodynamic polarization method. The obtained results show that the stainless steel is significantly resistant to pit formation, but it is susceptible to pit growth and crevice corrosion. Pits formed at the corrosion potential grow continuously. Statistical analysis of the results obtained during pitting corrosion testing was performed. It can be assumed with a probability of 95% that values of indicators of resistance to pit formation (the pitting potential Epit, the metastable pitting potential Empit and the difference Epit-Ekor) will be within the range of several percents. Values of indicators of resistance to pit growth (the amount of charge required for the pit growth q, the protective potential Eprot and the difference Epit-Eprot) will be within the broader range. In addition, the appearance of pits on the surface of the stainless steel, as well as the appearance of the pits bottom, were analyzed. It was shown that the structure of the stainless steel tested was not sensitized to pitting and intergranular corrosion, which means that the stainless steel was not previously thermally treated., Primenom potenciodinamičke metode ispitana je otpornost nerđajućeg čelika X5CrNi18-10 na piting koroziju, u rastvoru koji sadrži hloride i sulfate. Dobijeni rezultati pokazuju da je nerđajući čelik u značajnoj meri otporan prema formiranju pitova, ali postoji sklonost prema rastu pitova i koroziji u zazorima. Pitovi formirani na korozionom potencijalu nastavljaju stabilno da rastu. Izvršena je statistička analiza rezultata dobijenih pri ispitivanju piting korozije. Pokazano je da će se sa verovatnoćom od 95 % vrednosti pokazatelja otpornosti nerđajućeg čelika prema formiranju pitova (potencijal pitinga Epit, potencijal metastabilnog pitinga Empit i razlika Epit-Ekor) nalaziti u granicama od nekoliko procenata. Vrednosti pokazatelja otpornosti nerđajućeg čelika prema rastu pitova (količina naelektrisanja potrebna za rast pitova q, zaštitni potencijal Eprot i razlika Epit-Eprot) će se nalaziti u širim granicama. Pored navedenog, analiziran je izgled pitova na površini nerđajućeg čelika, kao i izgled dna pitova. Pokazano je da struktura ispitivanog nerđajućeg čelika nije senzibilizovana prema piting i interkristalnoj koroziji, odnosno da nerđajući čelik nije bio prethodno termički tretiran.",
publisher = "Belgrade, Serbia : Engineering Society for Corrosion",
journal = "Zaštita materijala",
title = "Formation and growth of pits on X5CrNi18-10 austenitic stainless steel in presence of chlorides and sulphates, Formiranje i rast pitova na austenitnom nerđajućem čeliku X5CrNi18-10 u prisustvu hlorida i sulfata",
volume = "59",
number = "1",
pages = "92-99",
doi = "10.5937/ZasMat1801094J"
}

Jegdić, B., Bobić, B., Radojković, B.,& Alić, B.. (2018). Formation and growth of pits on X5CrNi18-10 austenitic stainless steel in presence of chlorides and sulphates. in Zaštita materijala
Belgrade, Serbia : Engineering Society for Corrosion., 59(1), 92-99.
https://doi.org/10.5937/ZasMat1801094J

Jegdić B, Bobić B, Radojković B, Alić B. Formation and growth of pits on X5CrNi18-10 austenitic stainless steel in presence of chlorides and sulphates. in Zaštita materijala. 2018;59(1):92-99.
doi:10.5937/ZasMat1801094J .

Jegdić, Bore, Bobić, Biljana, Radojković, Bojana, Alić, Behar, "Formation and growth of pits on X5CrNi18-10 austenitic stainless steel in presence of chlorides and sulphates" in Zaštita materijala, 59, no. 1 (2018):92-99,
https://doi.org/10.5937/ZasMat1801094J . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Radojković, Bojana
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2284
AB  - This paper describes the correlation between the value of the corrosion potential and various types of corrosion of metals and alloys and their welded joints. It is shown that using the method of electrochemical noise is possible to predict the tendency of metals and alloys and their welded joints to different forms of localized corrosion (e.g. pitting corrosion), on the basis of the corrosion potential value. Also, there is a correlation between the value of corrosion potential and the tendency of aluminum alloys to stress corrosion cracking. The correlation between the value of the corrosion potential and the type of corrosion inhibitor is presented. In addition, the correlation between corrosion potential and tendency of stainless steels to pitting corrosion, as well as the tendency of surgical implants to galvanic corrosion was considered. Criteria for sacrificial and active cathodic protection are based on the measurements of corrosion potential. Also, the corrosion behaviour of steel armature in concrete depends on the value of corrosion potential. The susceptibility of metal (steel) constructions and their welded joints to hydrogen embrittlement depends to a considerable extent on the corrosion potential of steel in the given corrosion environment. Due to a large number of applications of corrosion potential measurements, this study is divided into two parts (Part I and Part II).
AB  - U ovom radu opisana je zavisnost vrednosti korozionog potencijala i različitih vidova korozije metala i legura i njihovih zavarenih spojeva. Pokazano je kako se primenom metode elektrohemijskog šuma, na osnovu vrednosti korozionog potencijala, može predvideti sklonost metala i legura i njihovih zavarenih spojeva prema različitim vidovima lokalizovane korozije, kao što je piting korozija. Takođe je pokazano da se na osnovu vrednosti korozionog potencijala može predvideti sklonosti aluminijumskih legura prema naponskoj koroziji. Ilustrovana je povezanost vrednosti korozionog potencijala i tipa inhibitora korozije. Razmatrana je povezanost korozionog potencijala sa sklonošću nerđajućeg čelika prema piting koroziji, kao i sklonošću hirurških implantanata prema galvanskoj koroziji. Kriterijumi protektorske i aktivne katodne zaštite se zasnivaju na merenju korozionog potencijala. Takođe, stanje armature u betonu se može proceniti na osnovu vrednosti korozionog potencijala. Sklonost metalnih (čeličnih) konstrukcija i njihovih zavarenih spojeva prema pojavi vodonične krtosti u značajnoj meri zavisi od vrednosti korozionog potencijala čelika u datoj korozionoj sredini. Zbog velikog broja primena merenja korozionog potencijala, rad je podeljen na dva dela (deo I i deo II).
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Relationship between corrosion potential and different corrosion forms of metals, alloys and theirs welded joints: Part II
T1  - Veza između korozionog potencijala i različitih vidova korozije metala i legura i njihovih zavarenih spojeva - II deo
VL  - 63
IS  - 2
SP  - 53
EP  - 63
DO  - 10.5937/zzk1802053J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Radojković, Bojana",
year = "2018",
abstract = "This paper describes the correlation between the value of the corrosion potential and various types of corrosion of metals and alloys and their welded joints. It is shown that using the method of electrochemical noise is possible to predict the tendency of metals and alloys and their welded joints to different forms of localized corrosion (e.g. pitting corrosion), on the basis of the corrosion potential value. Also, there is a correlation between the value of corrosion potential and the tendency of aluminum alloys to stress corrosion cracking. The correlation between the value of the corrosion potential and the type of corrosion inhibitor is presented. In addition, the correlation between corrosion potential and tendency of stainless steels to pitting corrosion, as well as the tendency of surgical implants to galvanic corrosion was considered. Criteria for sacrificial and active cathodic protection are based on the measurements of corrosion potential. Also, the corrosion behaviour of steel armature in concrete depends on the value of corrosion potential. The susceptibility of metal (steel) constructions and their welded joints to hydrogen embrittlement depends to a considerable extent on the corrosion potential of steel in the given corrosion environment. Due to a large number of applications of corrosion potential measurements, this study is divided into two parts (Part I and Part II)., U ovom radu opisana je zavisnost vrednosti korozionog potencijala i različitih vidova korozije metala i legura i njihovih zavarenih spojeva. Pokazano je kako se primenom metode elektrohemijskog šuma, na osnovu vrednosti korozionog potencijala, može predvideti sklonost metala i legura i njihovih zavarenih spojeva prema različitim vidovima lokalizovane korozije, kao što je piting korozija. Takođe je pokazano da se na osnovu vrednosti korozionog potencijala može predvideti sklonosti aluminijumskih legura prema naponskoj koroziji. Ilustrovana je povezanost vrednosti korozionog potencijala i tipa inhibitora korozije. Razmatrana je povezanost korozionog potencijala sa sklonošću nerđajućeg čelika prema piting koroziji, kao i sklonošću hirurških implantanata prema galvanskoj koroziji. Kriterijumi protektorske i aktivne katodne zaštite se zasnivaju na merenju korozionog potencijala. Takođe, stanje armature u betonu se može proceniti na osnovu vrednosti korozionog potencijala. Sklonost metalnih (čeličnih) konstrukcija i njihovih zavarenih spojeva prema pojavi vodonične krtosti u značajnoj meri zavisi od vrednosti korozionog potencijala čelika u datoj korozionoj sredini. Zbog velikog broja primena merenja korozionog potencijala, rad je podeljen na dva dela (deo I i deo II).",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Relationship between corrosion potential and different corrosion forms of metals, alloys and theirs welded joints: Part II, Veza između korozionog potencijala i različitih vidova korozije metala i legura i njihovih zavarenih spojeva - II deo",
volume = "63",
number = "2",
pages = "53-63",
doi = "10.5937/zzk1802053J"
}

Jegdić, B., Bobić, B.,& Radojković, B.. (2018). Relationship between corrosion potential and different corrosion forms of metals, alloys and theirs welded joints: Part II. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 63(2), 53-63.
https://doi.org/10.5937/zzk1802053J

Jegdić B, Bobić B, Radojković B. Relationship between corrosion potential and different corrosion forms of metals, alloys and theirs welded joints: Part II. in Zavarivanje i zavarene konstrukcije. 2018;63(2):53-63.
doi:10.5937/zzk1802053J .

Jegdić, Bore, Bobić, Biljana, Radojković, Bojana, "Relationship between corrosion potential and different corrosion forms of metals, alloys and theirs welded joints: Part II" in Zavarivanje i zavarene konstrukcije, 63, no. 2 (2018):53-63,
https://doi.org/10.5937/zzk1802053J . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Nedeljković, Dragan
AU  - Alić, Behar
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2075
AB  - The effect of welding current on the pitting corrosion resistance in the welded joint of austenitic stainless steel X5CrNi18-10 was tested. Welding was carried out using three different current intensity (110 A, 130 A and 150 A). Testing of pitting corrosion resistance was performed by electrochemical potentiodynamic method on the base metal, in the heat affected zone (HAZ) and in the weld metal. Values of pitting corrosion resistance indicators for the base metal are similar to values of the indicators for the weld metal, regardless of the applied welding current. The values of indicators for pitting corrosion resistance in the HAZ are less than the values of these indicators for the base metal and for the weld metal. This is caused by the precipitation of chromium carbides at grain boundaries and by partial formation of chromium depleted areas along the grain boundaries in the HAZ. HAZ that was formed at welding current of 150 A shows the smallest pitting corrosion resistance. This can be explained by the largest depletion in chromium of grain boundary areas at welding current of 150 A. The sensitization degree in the HAZ to intergranular corrosion is also the greatest, in this case. With increase of the sensitization degree to intergranular corrosion the value of metastable pitting potential linearly decreases, which means that pitting corrosion resistance in the HAZ is reduced.
AB  - Ispitan je uticaj jačine struje zavarivanja na otpornost prema piting koroziji zavarenog spoja austenitnog nerđajućeg čelika X5CrNi18-10. Zavarivanje austenitnog nerđajućeg čelika je izvršeno primenom tri različite jačine struje (110 A, 130 A i 150 A). Ispitivanja otpornosti prema piting koroziji su izvršena elektrohemijskom potenciodinamičkom metodom na osnovnom metalu, u zoni uticaja toplote (ZUT) i u metalu šava zavarenog spoja. Vrednosti pokazatelja piting korozije za osnovni metal su bliske vrednostima odgovarajućih pokazatelja za metal šava, nezavisno od primenjene jačine struje pri zavarivanju. Vrednosti pokazatelja piting korozije u ZUT-u su manje od vrednosti odgovarajućih pokazatelja za osnovni metal i metal šava. To je posledica delimičnog izdvajanja hrom-karbida po granicama zrna i obrazovanja hromom osiromašenih oblasti uz granicu zrna u ZUT-u. ZUT formiran pri jačini struje zavarivanja od 150 A pokazuje najmanju otpornost prema piting koroziji, što se može objasniti najvećim osiromašenjem prigraničnih oblasti zrna hromom pri ovoj jačini struje zavarivanja. Tada je i sklonost ZUT-a prema interkristalnoj koroziji najveća. Povećanjem stepena senzibilizacije ZUT-a prema interkristalnoj koroziji vrednost potencijala metastabilnog pitinga se linearno smanjuje, što znači da se smanjuje otpornost ZUT-a prema piting koroziji.
PB  - Belgrade, Serbia : Engineering Society for Corrosion
T2  - Zaštita materijala
T1  - Influence of welding current intensity on pitting corrosion resistance in welded joint of stainless steel X5CrNi18-10
T1  - Uticaj jačine struje zavarivanja na otpornost prema piting koroziji zavarenog spoja nerđajućeg čelika X5CrNi18-10
VL  - 58
IS  - 3
SP  - 297
EP  - 303
DO  - 10.5937/ZasMat1703297J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Nedeljković, Dragan and Alić, Behar",
year = "2017",
abstract = "The effect of welding current on the pitting corrosion resistance in the welded joint of austenitic stainless steel X5CrNi18-10 was tested. Welding was carried out using three different current intensity (110 A, 130 A and 150 A). Testing of pitting corrosion resistance was performed by electrochemical potentiodynamic method on the base metal, in the heat affected zone (HAZ) and in the weld metal. Values of pitting corrosion resistance indicators for the base metal are similar to values of the indicators for the weld metal, regardless of the applied welding current. The values of indicators for pitting corrosion resistance in the HAZ are less than the values of these indicators for the base metal and for the weld metal. This is caused by the precipitation of chromium carbides at grain boundaries and by partial formation of chromium depleted areas along the grain boundaries in the HAZ. HAZ that was formed at welding current of 150 A shows the smallest pitting corrosion resistance. This can be explained by the largest depletion in chromium of grain boundary areas at welding current of 150 A. The sensitization degree in the HAZ to intergranular corrosion is also the greatest, in this case. With increase of the sensitization degree to intergranular corrosion the value of metastable pitting potential linearly decreases, which means that pitting corrosion resistance in the HAZ is reduced., Ispitan je uticaj jačine struje zavarivanja na otpornost prema piting koroziji zavarenog spoja austenitnog nerđajućeg čelika X5CrNi18-10. Zavarivanje austenitnog nerđajućeg čelika je izvršeno primenom tri različite jačine struje (110 A, 130 A i 150 A). Ispitivanja otpornosti prema piting koroziji su izvršena elektrohemijskom potenciodinamičkom metodom na osnovnom metalu, u zoni uticaja toplote (ZUT) i u metalu šava zavarenog spoja. Vrednosti pokazatelja piting korozije za osnovni metal su bliske vrednostima odgovarajućih pokazatelja za metal šava, nezavisno od primenjene jačine struje pri zavarivanju. Vrednosti pokazatelja piting korozije u ZUT-u su manje od vrednosti odgovarajućih pokazatelja za osnovni metal i metal šava. To je posledica delimičnog izdvajanja hrom-karbida po granicama zrna i obrazovanja hromom osiromašenih oblasti uz granicu zrna u ZUT-u. ZUT formiran pri jačini struje zavarivanja od 150 A pokazuje najmanju otpornost prema piting koroziji, što se može objasniti najvećim osiromašenjem prigraničnih oblasti zrna hromom pri ovoj jačini struje zavarivanja. Tada je i sklonost ZUT-a prema interkristalnoj koroziji najveća. Povećanjem stepena senzibilizacije ZUT-a prema interkristalnoj koroziji vrednost potencijala metastabilnog pitinga se linearno smanjuje, što znači da se smanjuje otpornost ZUT-a prema piting koroziji.",
publisher = "Belgrade, Serbia : Engineering Society for Corrosion",
journal = "Zaštita materijala",
title = "Influence of welding current intensity on pitting corrosion resistance in welded joint of stainless steel X5CrNi18-10, Uticaj jačine struje zavarivanja na otpornost prema piting koroziji zavarenog spoja nerđajućeg čelika X5CrNi18-10",
volume = "58",
number = "3",
pages = "297-303",
doi = "10.5937/ZasMat1703297J"
}

Jegdić, B., Bobić, B., Nedeljković, D.,& Alić, B.. (2017). Influence of welding current intensity on pitting corrosion resistance in welded joint of stainless steel X5CrNi18-10. in Zaštita materijala
Belgrade, Serbia : Engineering Society for Corrosion., 58(3), 297-303.
https://doi.org/10.5937/ZasMat1703297J

Jegdić B, Bobić B, Nedeljković D, Alić B. Influence of welding current intensity on pitting corrosion resistance in welded joint of stainless steel X5CrNi18-10. in Zaštita materijala. 2017;58(3):297-303.
doi:10.5937/ZasMat1703297J .

Jegdić, Bore, Bobić, Biljana, Nedeljković, Dragan, Alić, Behar, "Influence of welding current intensity on pitting corrosion resistance in welded joint of stainless steel X5CrNi18-10" in Zaštita materijala, 58, no. 3 (2017):297-303,
https://doi.org/10.5937/ZasMat1703297J . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Alić, Behar
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2081
AB  - Susceptibility to intergranular corrosion in welded joints of austenitic stainless steel X5Cr-Ni18-10 was tested. The welding was performed with different intensity of welding current (110 A, 130 A and 150 A). The tests were performed using electrochemical potentiokinetic reactivation method with double loop (DL EPR method) on the base metal and in the heat affected zone. The results obtained by the DL EPR method show that the heat affected zone formed by welding with 150 A has the highest susceptibility to intergranular corrosion. The susceptibility to intergranular corrosion is considerably lower when applying smaller welding current. The base metal is resistant to intergranular corrosion. The indicator of susceptibility to intergranular corrosion (Qr/Qp)GBA is ~ 6 times higher for the heat affected zone (at 150 A welding current intensity) than for the base metal. Obtained testing results show that the welding current intensity greatly influences the susceptibility to intergranular corrosion in welded joints of stainless steel X5Cr-Ni18-10.
AB  - Ispitana je sklonost prema interkristalnoj koroziji zavarenog spoja austenitnog nerđajućeg čelika X5Cr-Ni18-10. Zavareni spoj je formiran pri različitim jačinama struje zavarivanja (110 A, 130 A i 150 A). Ispitivanja su vršena metodom elektrohemijske potenciokinetičke reaktivacije sa dvostrukom petljom (DL EPR metoda), na osnovnom metalu i u zoni uticaja toplote (ZUT). Osnovni metal je otporan prema interkristalnoj koroziji. Zona uticaja toplote formirana pri zavarivanju strujom jačine 150 A pokazuje najveću sklonost prema interkristalnoj koroziji. Sklonost prema interkristalnoj koroziji je znatno niža pri zavarivanju manjim jačinama struje. Pokazatelj sklonosti prema interkristalnoj koroziji (Qr/Qp)GBA je ~ 6 puta veći za zonu uticaja toplote (pri jačini struje zavarivanja od 150 A) nego za osnovni metal. Na osnovu prikazanih rezultata može se zaključiti da jačina struje zavarivanja u velikoj meri utiče na sklonost zavarenog spoja nerđajućeg čelika X5CrNi18-10 prema interkristalnoj koroziji. .
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Influence of welding current intensity on susceptibility to intergranular corrosion in welded joints of stainless steel
T1  - Uticaj jačine struje zavarivanja na sklonost prema interkristalnoj koroziji zavarenog spoja nerdajućeg čelika
VL  - 62
IS  - 4
SP  - 149
EP  - 154
DO  - 10.5937/zzk1704149J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Alić, Behar",
year = "2017",
abstract = "Susceptibility to intergranular corrosion in welded joints of austenitic stainless steel X5Cr-Ni18-10 was tested. The welding was performed with different intensity of welding current (110 A, 130 A and 150 A). The tests were performed using electrochemical potentiokinetic reactivation method with double loop (DL EPR method) on the base metal and in the heat affected zone. The results obtained by the DL EPR method show that the heat affected zone formed by welding with 150 A has the highest susceptibility to intergranular corrosion. The susceptibility to intergranular corrosion is considerably lower when applying smaller welding current. The base metal is resistant to intergranular corrosion. The indicator of susceptibility to intergranular corrosion (Qr/Qp)GBA is ~ 6 times higher for the heat affected zone (at 150 A welding current intensity) than for the base metal. Obtained testing results show that the welding current intensity greatly influences the susceptibility to intergranular corrosion in welded joints of stainless steel X5Cr-Ni18-10., Ispitana je sklonost prema interkristalnoj koroziji zavarenog spoja austenitnog nerđajućeg čelika X5Cr-Ni18-10. Zavareni spoj je formiran pri različitim jačinama struje zavarivanja (110 A, 130 A i 150 A). Ispitivanja su vršena metodom elektrohemijske potenciokinetičke reaktivacije sa dvostrukom petljom (DL EPR metoda), na osnovnom metalu i u zoni uticaja toplote (ZUT). Osnovni metal je otporan prema interkristalnoj koroziji. Zona uticaja toplote formirana pri zavarivanju strujom jačine 150 A pokazuje najveću sklonost prema interkristalnoj koroziji. Sklonost prema interkristalnoj koroziji je znatno niža pri zavarivanju manjim jačinama struje. Pokazatelj sklonosti prema interkristalnoj koroziji (Qr/Qp)GBA je ~ 6 puta veći za zonu uticaja toplote (pri jačini struje zavarivanja od 150 A) nego za osnovni metal. Na osnovu prikazanih rezultata može se zaključiti da jačina struje zavarivanja u velikoj meri utiče na sklonost zavarenog spoja nerđajućeg čelika X5CrNi18-10 prema interkristalnoj koroziji. .",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Influence of welding current intensity on susceptibility to intergranular corrosion in welded joints of stainless steel, Uticaj jačine struje zavarivanja na sklonost prema interkristalnoj koroziji zavarenog spoja nerdajućeg čelika",
volume = "62",
number = "4",
pages = "149-154",
doi = "10.5937/zzk1704149J"
}

Jegdić, B., Bobić, B.,& Alić, B.. (2017). Influence of welding current intensity on susceptibility to intergranular corrosion in welded joints of stainless steel. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 62(4), 149-154.
https://doi.org/10.5937/zzk1704149J

Jegdić B, Bobić B, Alić B. Influence of welding current intensity on susceptibility to intergranular corrosion in welded joints of stainless steel. in Zavarivanje i zavarene konstrukcije. 2017;62(4):149-154.
doi:10.5937/zzk1704149J .

Jegdić, Bore, Bobić, Biljana, Alić, Behar, "Influence of welding current intensity on susceptibility to intergranular corrosion in welded joints of stainless steel" in Zavarivanje i zavarene konstrukcije, 62, no. 4 (2017):149-154,
https://doi.org/10.5937/zzk1704149J . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Bošnjakov, Milica
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2086
AB  - This paper briefly describes the relationship between corrosion potential and different corrosion forms of metals and their welded joints. The nature of corrosion potential and the method of its measurement is also described. It is shown in a simple way how the tendency of welded joints to galvanic corrosion can be determined on the basis of the meausred corrosion potential value. It is also shown that different metallurgical and corrosion states of aluminim alloys can be evaluated using the measured value of corrosion potential. The tendency to intergranular corrosion in the welded joints of stainless steels can be predicted on the basis of corrosion potential. Due to a large number of corrosion potential measurement applications this work is divided into two parts (part I and part II).
AB  - U ovom radu opisana je veza između korozionog potencijala i različitih vidova korozije metala i njihovih zavarenih spojeva. Pored toga, opisana je priroda korozionog potencijala i postupak njegovog merenja.Na jednostavan način pokazano je kako se na osnovu vrednosti korozionog potencijala može odrediti sklonost zavarenih spojeva aluminijumskih legura i zavarenih spojeva ugljeničnih čelika prema galvanskoj koroziji. Takođe je pokazano kako sena osnovu merenja korozionog potencijala mogu odrediti različita metalurška i koroziona stanja aluminijumskih legura, kao i sklonost zavarenih spojeva nerđajućih čelika prema interkristalnoj koroziji. Zbog velikog broja primena merenja korozionog potencijala, rad je podeljen na dva dela (deo I i deo II).
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Reationship between corrosion potential and diferent corrosion forms of metals, alloys and theirs welded joints: Part I
T1  - Veza izmenu korozionog potencijala i različitih vidova korozije metala, legura i njihovih zavarenih spojeva - deo I
VL  - 62
IS  - 2
SP  - 65
EP  - 76
DO  - 10.5937/zzk1702065J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Bošnjakov, Milica",
year = "2017",
abstract = "This paper briefly describes the relationship between corrosion potential and different corrosion forms of metals and their welded joints. The nature of corrosion potential and the method of its measurement is also described. It is shown in a simple way how the tendency of welded joints to galvanic corrosion can be determined on the basis of the meausred corrosion potential value. It is also shown that different metallurgical and corrosion states of aluminim alloys can be evaluated using the measured value of corrosion potential. The tendency to intergranular corrosion in the welded joints of stainless steels can be predicted on the basis of corrosion potential. Due to a large number of corrosion potential measurement applications this work is divided into two parts (part I and part II)., U ovom radu opisana je veza između korozionog potencijala i različitih vidova korozije metala i njihovih zavarenih spojeva. Pored toga, opisana je priroda korozionog potencijala i postupak njegovog merenja.Na jednostavan način pokazano je kako se na osnovu vrednosti korozionog potencijala može odrediti sklonost zavarenih spojeva aluminijumskih legura i zavarenih spojeva ugljeničnih čelika prema galvanskoj koroziji. Takođe je pokazano kako sena osnovu merenja korozionog potencijala mogu odrediti različita metalurška i koroziona stanja aluminijumskih legura, kao i sklonost zavarenih spojeva nerđajućih čelika prema interkristalnoj koroziji. Zbog velikog broja primena merenja korozionog potencijala, rad je podeljen na dva dela (deo I i deo II).",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Reationship between corrosion potential and diferent corrosion forms of metals, alloys and theirs welded joints: Part I, Veza izmenu korozionog potencijala i različitih vidova korozije metala, legura i njihovih zavarenih spojeva - deo I",
volume = "62",
number = "2",
pages = "65-76",
doi = "10.5937/zzk1702065J"
}

Jegdić, B., Bobić, B.,& Bošnjakov, M.. (2017). Reationship between corrosion potential and diferent corrosion forms of metals, alloys and theirs welded joints: Part I. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 62(2), 65-76.
https://doi.org/10.5937/zzk1702065J

Jegdić B, Bobić B, Bošnjakov M. Reationship between corrosion potential and diferent corrosion forms of metals, alloys and theirs welded joints: Part I. in Zavarivanje i zavarene konstrukcije. 2017;62(2):65-76.
doi:10.5937/zzk1702065J .

Jegdić, Bore, Bobić, Biljana, Bošnjakov, Milica, "Reationship between corrosion potential and diferent corrosion forms of metals, alloys and theirs welded joints: Part I" in Zavarivanje i zavarene konstrukcije, 62, no. 2 (2017):65-76,
https://doi.org/10.5937/zzk1702065J . .

TY  - JOUR
AU  - Bobić, Biljana
AU  - Jegdić, Bore
AU  - Burzic, Meri D.
AU  - Damnjanović, Zvonko
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2197
UR  - http://divk.inovacionicentar.rs/ivk/ivk17/ivk1701-4s.html
AB  - Corrosion behaviour of steel Sa 387 Gr. 91 is tested in solutions containing chloride and sulphate anions. These solutions simulate the conditions of marine and industrial atmosphere. The tests are carried out in a slightly acidic and moderately acidic environment. It is shown that the steel corrodes uniformly without pitting or other forms of local dissolution. Corrosion current density is determined by three independent electrochemical techniques (linear polarization resistance, electrochemical impedance spectroscopy and linear sweep voltammetry). Values of corrosion rate are calculated based on values of corrosion current density. Values of corrosion rate obtained by different electrochemical techniques are in a very good agreement. An estimation of the working life of a pressure vessel made of steel Sa 387 Gr. 91 is given from the standpoint of general (uniform) corrosion.
PB  - Society for Structural Integrity and Life, Institute for Material Testing
T2  - Structural Integrity and Life
T1  - Corrosion testing of sa 387 gr. 91 steel
VL  - 17
IS  - 1
SP  - 15
EP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_cer_2197
ER  - 

@article{
author = "Bobić, Biljana and Jegdić, Bore and Burzic, Meri D. and Damnjanović, Zvonko",
year = "2017",
abstract = "Corrosion behaviour of steel Sa 387 Gr. 91 is tested in solutions containing chloride and sulphate anions. These solutions simulate the conditions of marine and industrial atmosphere. The tests are carried out in a slightly acidic and moderately acidic environment. It is shown that the steel corrodes uniformly without pitting or other forms of local dissolution. Corrosion current density is determined by three independent electrochemical techniques (linear polarization resistance, electrochemical impedance spectroscopy and linear sweep voltammetry). Values of corrosion rate are calculated based on values of corrosion current density. Values of corrosion rate obtained by different electrochemical techniques are in a very good agreement. An estimation of the working life of a pressure vessel made of steel Sa 387 Gr. 91 is given from the standpoint of general (uniform) corrosion.",
publisher = "Society for Structural Integrity and Life, Institute for Material Testing",
journal = "Structural Integrity and Life",
title = "Corrosion testing of sa 387 gr. 91 steel",
volume = "17",
number = "1",
pages = "15-20",
url = "https://hdl.handle.net/21.15107/rcub_cer_2197"
}

Bobić, B., Jegdić, B., Burzic, M. D.,& Damnjanović, Z.. (2017). Corrosion testing of sa 387 gr. 91 steel. in Structural Integrity and Life
Society for Structural Integrity and Life, Institute for Material Testing., 17(1), 15-20.
https://hdl.handle.net/21.15107/rcub_cer_2197

Bobić B, Jegdić B, Burzic MD, Damnjanović Z. Corrosion testing of sa 387 gr. 91 steel. in Structural Integrity and Life. 2017;17(1):15-20.
https://hdl.handle.net/21.15107/rcub_cer_2197 .

Bobić, Biljana, Jegdić, Bore, Burzic, Meri D., Damnjanović, Zvonko, "Corrosion testing of sa 387 gr. 91 steel" in Structural Integrity and Life, 17, no. 1 (2017):15-20,
https://hdl.handle.net/21.15107/rcub_cer_2197 .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Bošnjakov, Milica
AU  - Behar, Alić
PY  - 2017
UR  - https://metall-mater-eng.com/index.php/home/article/view/274
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3914
AB  - Pitting corrosion resistance and intergranular corrosion of the austenitic stainless steel X5Cr Ni18-10 were tested on the base metal, heat affected zone and weld metal. Testing of pitting corrosion was performed by the potentiodynamic polarization method, while testing of intergranular corrosion was performed by the method of electrochemical potentiokinetic reactivation with double loop. The base metal was completely resistant to intergranular corrosion, while the heat affected zone showed a slight susceptibility to intergranular corrosion. Indicators of pitting corrosion resistance for the weld metal and the base metal were very similar, but their values are significantly higher than the values for the heat affected zone. This was caused by reduction of the chromium concentration in the grain boundary areas in the heat affected zone, even though the carbon content in the examined stainless steel is low (0.04 wt. % C).
PB  - Serbia : Association of Metallurgical Engineers of Serbia
T2  - Metallurgical & Materials Engineering
T1  - Testing of intergranular and pitting corrosion in sensitized welded joints of austenitic stainless steel
VL  - 23
IS  - 2
SP  - 109
EP  - 117
DO  - 10.30544/274
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Bošnjakov, Milica and Behar, Alić",
year = "2017",
abstract = "Pitting corrosion resistance and intergranular corrosion of the austenitic stainless steel X5Cr Ni18-10 were tested on the base metal, heat affected zone and weld metal. Testing of pitting corrosion was performed by the potentiodynamic polarization method, while testing of intergranular corrosion was performed by the method of electrochemical potentiokinetic reactivation with double loop. The base metal was completely resistant to intergranular corrosion, while the heat affected zone showed a slight susceptibility to intergranular corrosion. Indicators of pitting corrosion resistance for the weld metal and the base metal were very similar, but their values are significantly higher than the values for the heat affected zone. This was caused by reduction of the chromium concentration in the grain boundary areas in the heat affected zone, even though the carbon content in the examined stainless steel is low (0.04 wt. % C).",
publisher = "Serbia : Association of Metallurgical Engineers of Serbia",
journal = "Metallurgical & Materials Engineering",
title = "Testing of intergranular and pitting corrosion in sensitized welded joints of austenitic stainless steel",
volume = "23",
number = "2",
pages = "109-117",
doi = "10.30544/274"
}

Jegdić, B., Bobić, B., Bošnjakov, M.,& Behar, A.. (2017). Testing of intergranular and pitting corrosion in sensitized welded joints of austenitic stainless steel. in Metallurgical & Materials Engineering
Serbia : Association of Metallurgical Engineers of Serbia., 23(2), 109-117.
https://doi.org/10.30544/274

Jegdić B, Bobić B, Bošnjakov M, Behar A. Testing of intergranular and pitting corrosion in sensitized welded joints of austenitic stainless steel. in Metallurgical & Materials Engineering. 2017;23(2):109-117.
doi:10.30544/274 .

Jegdić, Bore, Bobić, Biljana, Bošnjakov, Milica, Behar, Alić, "Testing of intergranular and pitting corrosion in sensitized welded joints of austenitic stainless steel" in Metallurgical & Materials Engineering, 23, no. 2 (2017):109-117,
https://doi.org/10.30544/274 . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Alić, Behar
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1988
AB  - The susceptibility to intergranular corrosion of welded joints of austenitic stainless steel X5CrNi18-10 was examined. The testing was performed by the electrochemical potentiokinetic reactivation method with single loop (EPR) and double loop (DL EPR). Also, the susceptibility to intergranular corrosion of stainless steels after senzibilization heat treatment (675 °C/1h) was examined. At given welding parameters (current intensity, the thickness of welded samples of stainless steel, etc.) the base metal is completely resistant to intergranular corrosion, while the heat affected zone shows a relatively low susceptibility to intergranular corrosion. After senzibilization heat treatment the stainless steel showed something higher susceptibility to intergranular corrosion. The advantages of applied electrochemical methods in relation to the classical chemical methods for intergranular corrosion testing were analyzed. DL EPR and EPR methods provide quantitative data on the sensitization degree to intergranular corrosion (in welded joints) and also to intergranular stress corrosion cracking.
AB  - Ispitana je sklonost zavarenog spoja austenitnog nerđajućeg čelika X5CrNi18-10 prema interkristalnoj koroziji. Ispitivanje je izvršeno metodom elektrohemijske potenciokinetičke reaktivacije sa jednostrukom petljom (EPR) i sa dvostrukom petljom (DL EPR). Takođe, određena je sklonost prema interkristalnoj koroziji navedenog nerđajućeg čelika posle senzibilizacione termičke obrade (675 OC/1h). Pri datim uslovima zavarivanja (primenjena jačina struje zavarivanja, debljina zavarenih uzoraka od nerđajućeg čelika, itd.) osnovni metal je potpuno otporan prema interkristalnoj koroziji, dok je zona uticaja toplote u maloj meri sklona prema interkristalnoj koroziji. Posle senzibilizacione termičke obrade nerđajući čelik pokazao je značajniju sklonost prema interkristalnoj koroziji. Analizirane su mogućnosti navedenih elektrohemijskih metoda u odnosu na mogućnosti klasičnih hemijskih metoda ispitivanja interkristalne korozije u ključalim rastvorima kiselina. EPR i DL EPR metode daju kvantitativne podatke o stepenu senzibilizacije (zavarenog spoja) nerđajućeg čelika prema interkristalnoj koroziji, a takođe i prema interkristalnoj naponskoj koroziji.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Testing of susceptibility to intergranular corrosion in welded joints of austenitic stainless steel
T1  - Određivanje sklonosti zavarenog spoja austenitnog nerđajućeg čelika prema interkristalnoj koroziji
VL  - 61
IS  - 1
SP  - 13
EP  - 18
DO  - 10.5937/zzk1601013J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Alić, Behar",
year = "2016",
abstract = "The susceptibility to intergranular corrosion of welded joints of austenitic stainless steel X5CrNi18-10 was examined. The testing was performed by the electrochemical potentiokinetic reactivation method with single loop (EPR) and double loop (DL EPR). Also, the susceptibility to intergranular corrosion of stainless steels after senzibilization heat treatment (675 °C/1h) was examined. At given welding parameters (current intensity, the thickness of welded samples of stainless steel, etc.) the base metal is completely resistant to intergranular corrosion, while the heat affected zone shows a relatively low susceptibility to intergranular corrosion. After senzibilization heat treatment the stainless steel showed something higher susceptibility to intergranular corrosion. The advantages of applied electrochemical methods in relation to the classical chemical methods for intergranular corrosion testing were analyzed. DL EPR and EPR methods provide quantitative data on the sensitization degree to intergranular corrosion (in welded joints) and also to intergranular stress corrosion cracking., Ispitana je sklonost zavarenog spoja austenitnog nerđajućeg čelika X5CrNi18-10 prema interkristalnoj koroziji. Ispitivanje je izvršeno metodom elektrohemijske potenciokinetičke reaktivacije sa jednostrukom petljom (EPR) i sa dvostrukom petljom (DL EPR). Takođe, određena je sklonost prema interkristalnoj koroziji navedenog nerđajućeg čelika posle senzibilizacione termičke obrade (675 OC/1h). Pri datim uslovima zavarivanja (primenjena jačina struje zavarivanja, debljina zavarenih uzoraka od nerđajućeg čelika, itd.) osnovni metal je potpuno otporan prema interkristalnoj koroziji, dok je zona uticaja toplote u maloj meri sklona prema interkristalnoj koroziji. Posle senzibilizacione termičke obrade nerđajući čelik pokazao je značajniju sklonost prema interkristalnoj koroziji. Analizirane su mogućnosti navedenih elektrohemijskih metoda u odnosu na mogućnosti klasičnih hemijskih metoda ispitivanja interkristalne korozije u ključalim rastvorima kiselina. EPR i DL EPR metode daju kvantitativne podatke o stepenu senzibilizacije (zavarenog spoja) nerđajućeg čelika prema interkristalnoj koroziji, a takođe i prema interkristalnoj naponskoj koroziji.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Testing of susceptibility to intergranular corrosion in welded joints of austenitic stainless steel, Određivanje sklonosti zavarenog spoja austenitnog nerđajućeg čelika prema interkristalnoj koroziji",
volume = "61",
number = "1",
pages = "13-18",
doi = "10.5937/zzk1601013J"
}

Jegdić, B., Bobić, B.,& Alić, B.. (2016). Testing of susceptibility to intergranular corrosion in welded joints of austenitic stainless steel. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 61(1), 13-18.
https://doi.org/10.5937/zzk1601013J

Jegdić B, Bobić B, Alić B. Testing of susceptibility to intergranular corrosion in welded joints of austenitic stainless steel. in Zavarivanje i zavarene konstrukcije. 2016;61(1):13-18.
doi:10.5937/zzk1601013J .

Jegdić, Bore, Bobić, Biljana, Alić, Behar, "Testing of susceptibility to intergranular corrosion in welded joints of austenitic stainless steel" in Zavarivanje i zavarene konstrukcije, 61, no. 1 (2016):13-18,
https://doi.org/10.5937/zzk1601013J . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Pavlović, Miloš K.
AU  - Alil, Ana
AU  - Putić, Slaviša S.
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1734
AB  - The effect of one-step and a new (short) two-step aging process on the resistance to stress corrosion cracking of an aluminum alloy 7000 series was investigated, using slow strain rate test and fracture mechanics method. The aging level in the tested alloy was evaluated by means of scanning electron microscopy and measurements of electrical resistivity. It was shown that the alloy after the new two-step aging is significantly more resistant to stress corrosion cracking. Values of tensile properties and fracture toughness are similar for both thermal states. Processes that take place at the crack tip have been considered. The effect of the testing solution temperature on the crack growth rate on the plateau was determined. Two values of the apparent activation energy were obtained. These values correspond to different processes that control crack growth rate on the plateau at higher and lower temperatures.
AB  - Ispitivan je uticaj jednostepenog i novog (kratkotrajnog) dvostepenog termičkog taloženja na otpornost prema naponskoj koroziji aluminijumske legure serije 7000, primenom metode male brzine deformacije i metode mehanike loma. Stepen starenja ispitivane legure je procenjen primenom skening elektronske mikroskopije i na osnovu merenja električne otpornosti. Pokazano je da je legura posle novog dvostepenog termičkog starenja znatno otpornija prema naponskoj koroziji. Vrednosti zateznih karakteristika i žilavosti loma su slične za oba termička stanja legure. Razmatrani su procesi koji se odvijaju na vrhu naponsko-korozione prsline. Određen je uticaj temperature rastvora za ispitivanje na brzinu rasta prsline na platou. Određene su dve vrednosti prividne energije aktivacije. Ove vrednosti odgovaraju različitim procesima koji kontrolišu brzinu rasta prsline na platou, na visokim i niskim temperaturama.
PB  - Association of the Chemical Engineers of Serbia
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - Stress corrosion cracking resistance of aluminum alloy 7000 series after two-step aging
T1  - Otpornost aluminijumske legure serije 7000 prema naponskoj koroziji posle dvostepenog termičkog taloženja
VL  - 21
IS  - 2
SP  - 261
EP  - 268
DO  - 10.2298/CICEQ140324024J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Pavlović, Miloš K. and Alil, Ana and Putić, Slaviša S.",
year = "2015",
abstract = "The effect of one-step and a new (short) two-step aging process on the resistance to stress corrosion cracking of an aluminum alloy 7000 series was investigated, using slow strain rate test and fracture mechanics method. The aging level in the tested alloy was evaluated by means of scanning electron microscopy and measurements of electrical resistivity. It was shown that the alloy after the new two-step aging is significantly more resistant to stress corrosion cracking. Values of tensile properties and fracture toughness are similar for both thermal states. Processes that take place at the crack tip have been considered. The effect of the testing solution temperature on the crack growth rate on the plateau was determined. Two values of the apparent activation energy were obtained. These values correspond to different processes that control crack growth rate on the plateau at higher and lower temperatures., Ispitivan je uticaj jednostepenog i novog (kratkotrajnog) dvostepenog termičkog taloženja na otpornost prema naponskoj koroziji aluminijumske legure serije 7000, primenom metode male brzine deformacije i metode mehanike loma. Stepen starenja ispitivane legure je procenjen primenom skening elektronske mikroskopije i na osnovu merenja električne otpornosti. Pokazano je da je legura posle novog dvostepenog termičkog starenja znatno otpornija prema naponskoj koroziji. Vrednosti zateznih karakteristika i žilavosti loma su slične za oba termička stanja legure. Razmatrani su procesi koji se odvijaju na vrhu naponsko-korozione prsline. Određen je uticaj temperature rastvora za ispitivanje na brzinu rasta prsline na platou. Određene su dve vrednosti prividne energije aktivacije. Ove vrednosti odgovaraju različitim procesima koji kontrolišu brzinu rasta prsline na platou, na visokim i niskim temperaturama.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "Stress corrosion cracking resistance of aluminum alloy 7000 series after two-step aging, Otpornost aluminijumske legure serije 7000 prema naponskoj koroziji posle dvostepenog termičkog taloženja",
volume = "21",
number = "2",
pages = "261-268",
doi = "10.2298/CICEQ140324024J"
}

Jegdić, B., Bobić, B., Pavlović, M. K., Alil, A.,& Putić, S. S.. (2015). Stress corrosion cracking resistance of aluminum alloy 7000 series after two-step aging. in Chemical Industry and Chemical Engineering Quarterly / CICEQ
Association of the Chemical Engineers of Serbia., 21(2), 261-268.
https://doi.org/10.2298/CICEQ140324024J

Jegdić B, Bobić B, Pavlović MK, Alil A, Putić SS. Stress corrosion cracking resistance of aluminum alloy 7000 series after two-step aging. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2015;21(2):261-268.
doi:10.2298/CICEQ140324024J .

Jegdić, Bore, Bobić, Biljana, Pavlović, Miloš K., Alil, Ana, Putić, Slaviša S., "Stress corrosion cracking resistance of aluminum alloy 7000 series after two-step aging" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 21, no. 2 (2015):261-268,
https://doi.org/10.2298/CICEQ140324024J . .

TY  - JOUR
AU  - Bobić, Biljana
AU  - Bajić, Nikola
AU  - Jegdić, Aleksandar
AU  - Stevanović, Maja
AU  - Jegdić, Bore
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1688
AB  - To determine corrosion rate of the base metal and weld metal were applied electrochemical techniques: linear polarization resistance, linear sweep voltammetry and electrochemical impedance spectroscopy. The samples were obtained by arc welding steel boiler plate using coated basic electrode. Factory electrode and electrodes, which are produced in the laboratory thinly and thick coated basic electrodes, were used for welding. It was found that the corrosion rate of the weld metal was greater than the corrosion rate of the base metal. The corrosion rate of weld metal obtained by thinly coated electrodes is less than the corrosion rate of weld metal obtained by thick coated basic and factory-coated electrodes. The corrosion rates, determined by different electrochemical techniques are in agreement.
AB  - Za određivanje brzine korozije osnovnog metala i metala šava u zavarenom spoju primenjene su elektrohemijske tehnike: linearna polarizaciona otpornost, voltametrija sa linearnom promenom potencijala i elektrohemijska impedansna spektroskopija. Uzorci za ispitivanje dobijeni su elektrolučnim zavarivanjem čeličnog kotlovskog lima, uz upotrebu obloženih bazičnih elektroda. Pri zavarivanju je korišćena fabrička elektroda i elektrode koje su proizvedene u laboratorijskim uslovima (tanko obložena i debelo obložena bazična elektroda). Utvrđeno je da je brzina korozije metala šava veća od brzine korozije osnovnog metala. Brzina korozije metala šava dobijenog pomoću tanko obložene elektrode je manja od brzine korozje metala šava dobijenog pomoću debelo obložene i fabričke elektrode. Vrednosti za brzinu korozije, određene različitim elektrohemijskim tehnikama, su u saglasnosti.
PB  - Belgrade, Serbia : Engineering Society for Corrosion
T2  - Zaštita materijala
T1  - Determination of the weld metal corrosion rate using electrochemical techniques
T1  - Određivanje brzine korozije metala šava u zavarenom spoju pomoću elektrohemijskih tehnika
VL  - 56
IS  - 3
SP  - 315
EP  - 319
DO  - 10.5937/ZasMat1503315B
ER  - 

@article{
author = "Bobić, Biljana and Bajić, Nikola and Jegdić, Aleksandar and Stevanović, Maja and Jegdić, Bore",
year = "2015",
abstract = "To determine corrosion rate of the base metal and weld metal were applied electrochemical techniques: linear polarization resistance, linear sweep voltammetry and electrochemical impedance spectroscopy. The samples were obtained by arc welding steel boiler plate using coated basic electrode. Factory electrode and electrodes, which are produced in the laboratory thinly and thick coated basic electrodes, were used for welding. It was found that the corrosion rate of the weld metal was greater than the corrosion rate of the base metal. The corrosion rate of weld metal obtained by thinly coated electrodes is less than the corrosion rate of weld metal obtained by thick coated basic and factory-coated electrodes. The corrosion rates, determined by different electrochemical techniques are in agreement., Za određivanje brzine korozije osnovnog metala i metala šava u zavarenom spoju primenjene su elektrohemijske tehnike: linearna polarizaciona otpornost, voltametrija sa linearnom promenom potencijala i elektrohemijska impedansna spektroskopija. Uzorci za ispitivanje dobijeni su elektrolučnim zavarivanjem čeličnog kotlovskog lima, uz upotrebu obloženih bazičnih elektroda. Pri zavarivanju je korišćena fabrička elektroda i elektrode koje su proizvedene u laboratorijskim uslovima (tanko obložena i debelo obložena bazična elektroda). Utvrđeno je da je brzina korozije metala šava veća od brzine korozije osnovnog metala. Brzina korozije metala šava dobijenog pomoću tanko obložene elektrode je manja od brzine korozje metala šava dobijenog pomoću debelo obložene i fabričke elektrode. Vrednosti za brzinu korozije, određene različitim elektrohemijskim tehnikama, su u saglasnosti.",
publisher = "Belgrade, Serbia : Engineering Society for Corrosion",
journal = "Zaštita materijala",
title = "Determination of the weld metal corrosion rate using electrochemical techniques, Određivanje brzine korozije metala šava u zavarenom spoju pomoću elektrohemijskih tehnika",
volume = "56",
number = "3",
pages = "315-319",
doi = "10.5937/ZasMat1503315B"
}

Bobić, B., Bajić, N., Jegdić, A., Stevanović, M.,& Jegdić, B.. (2015). Determination of the weld metal corrosion rate using electrochemical techniques. in Zaštita materijala
Belgrade, Serbia : Engineering Society for Corrosion., 56(3), 315-319.
https://doi.org/10.5937/ZasMat1503315B

Bobić B, Bajić N, Jegdić A, Stevanović M, Jegdić B. Determination of the weld metal corrosion rate using electrochemical techniques. in Zaštita materijala. 2015;56(3):315-319.
doi:10.5937/ZasMat1503315B .

Bobić, Biljana, Bajić, Nikola, Jegdić, Aleksandar, Stevanović, Maja, Jegdić, Bore, "Determination of the weld metal corrosion rate using electrochemical techniques" in Zaštita materijala, 56, no. 3 (2015):315-319,
https://doi.org/10.5937/ZasMat1503315B . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Jegdić, Aleksandar
AU  - Stevanović, Maja
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1770
AB  - In this work, the mechanisms of hydrogen evolution on the metal chromium in a solution of 0.1 M Na2SO4 + H2SO4, pH 1 to pH 7 were analysed. In the pH  LT  3 range, hydrogen is evolved according to three different mechanisms, depending on the experimental conditions: electrochemical evolution of H2 by reaction of H+ ions according to the Volmer-Heyrovsky mechanism, on the bare chromium surface, during chemical dissolution of chromium by the Kolotyrkin mechanism, which does not depend on the electrode potential, and electrochemical hydrogen evolution by the Volmer-Heyrovsky mechanism, but on the passive chromium. At pH values greater than 3, the fourth mechanism of hydrogen evolution is observed, that is electrochemical reaction of water molecules on the surface of oxide covered chromium surface.
AB  - U ovom radu analizirani su mehanizmi izdvajanja vodonika na metalnom hromu u rastvoru 0,1 M Na2SO4 + H2SO4, pH 1 do pH 7. U oblasti pH  LT  3 vodonik se izdvaja u zavisnosti od eksperimentalnih uslova po tri različita mehanizma: elektrohemijskim izdvajanjem H2 reagovanjem H+ jona po mehanizmu Folmer-Hejrovski na čistoj površini hroma, pri hemijskom rastvaranju hroma po mehanizmu Kolotirkina, a koje ne zavisi od elektrodnog potencijala i elektrohemijskim izdvajanjem vodonika po mehanizmu Folmer-Hejrovski, ali na pasivnom hromu. Pri pH vrednostima većim od 3 uočava se i četvrti mehanizam izdvajanja vodonika elektrohemijskim reagovanjem molekula vode na oksidom presvučenoj površini hroma.
PB  - Institut za rudarstvo i metalurgiju Bor
T2  - Mining and Metallurgy Engineering Bor
T1  - Mechanisms of hydrogen evolution on chromium
T1  - Mehanizmi izdvajanja vodonika na hromu
IS  - 3
SP  - 145
EP  - 156
DO  - 10.5937/mmeb1503145j
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Jegdić, Aleksandar and Stevanović, Maja",
year = "2015",
abstract = "In this work, the mechanisms of hydrogen evolution on the metal chromium in a solution of 0.1 M Na2SO4 + H2SO4, pH 1 to pH 7 were analysed. In the pH  LT  3 range, hydrogen is evolved according to three different mechanisms, depending on the experimental conditions: electrochemical evolution of H2 by reaction of H+ ions according to the Volmer-Heyrovsky mechanism, on the bare chromium surface, during chemical dissolution of chromium by the Kolotyrkin mechanism, which does not depend on the electrode potential, and electrochemical hydrogen evolution by the Volmer-Heyrovsky mechanism, but on the passive chromium. At pH values greater than 3, the fourth mechanism of hydrogen evolution is observed, that is electrochemical reaction of water molecules on the surface of oxide covered chromium surface., U ovom radu analizirani su mehanizmi izdvajanja vodonika na metalnom hromu u rastvoru 0,1 M Na2SO4 + H2SO4, pH 1 do pH 7. U oblasti pH  LT  3 vodonik se izdvaja u zavisnosti od eksperimentalnih uslova po tri različita mehanizma: elektrohemijskim izdvajanjem H2 reagovanjem H+ jona po mehanizmu Folmer-Hejrovski na čistoj površini hroma, pri hemijskom rastvaranju hroma po mehanizmu Kolotirkina, a koje ne zavisi od elektrodnog potencijala i elektrohemijskim izdvajanjem vodonika po mehanizmu Folmer-Hejrovski, ali na pasivnom hromu. Pri pH vrednostima većim od 3 uočava se i četvrti mehanizam izdvajanja vodonika elektrohemijskim reagovanjem molekula vode na oksidom presvučenoj površini hroma.",
publisher = "Institut za rudarstvo i metalurgiju Bor",
journal = "Mining and Metallurgy Engineering Bor",
title = "Mechanisms of hydrogen evolution on chromium, Mehanizmi izdvajanja vodonika na hromu",
number = "3",
pages = "145-156",
doi = "10.5937/mmeb1503145j"
}

Jegdić, B., Bobić, B., Jegdić, A.,& Stevanović, M.. (2015). Mechanisms of hydrogen evolution on chromium. in Mining and Metallurgy Engineering Bor
Institut za rudarstvo i metalurgiju Bor.(3), 145-156.
https://doi.org/10.5937/mmeb1503145j

Jegdić B, Bobić B, Jegdić A, Stevanović M. Mechanisms of hydrogen evolution on chromium. in Mining and Metallurgy Engineering Bor. 2015;(3):145-156.
doi:10.5937/mmeb1503145j .

Jegdić, Bore, Bobić, Biljana, Jegdić, Aleksandar, Stevanović, Maja, "Mechanisms of hydrogen evolution on chromium" in Mining and Metallurgy Engineering Bor, no. 3 (2015):145-156,
https://doi.org/10.5937/mmeb1503145j . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1699
AB  - Stainless steels and their welded joints are often susceptible to pitting corrosion in solutions containing chloride ions. Testing of pitting corrosion of stainless steels is performed using chemical and electrochemical methods. In this work pitting corrosion of the stainless steel AISI 304 was tested in chloride solutions, without the presence and in the presence of sulphate or nitrate ions. The tests were performed in order to determine the efficiency of these ions to prevent pitting corrosion, as well as to present the capabilities of the methods applied. Electrochemical methods were used to determine the value of pitting potential (Epit) and the critical pitting temperature (Tpit). The values of these parameters represent a measure of the resistance of stainless steels and their welded joints to pitting corrosion.
AB  - Nerđajući čelici i njihovi zavareni spojevi često podležu piting koroziji u rastvorima koji sadrže hloridne jone. Ispitivanje piting korozije nerđajućih čelika se vrši primenom hemijskih i elektrohemijskih metoda. U ovom radu vršeno je ispitivanje piting korozije nerđajućeg čelika AISI 304 u rastvoru hlorida, bez prisustva i u prisustvu sulfatnih, odnosno nitratnih jona. Ispitivanja su izvedena u cilju određivanje efikasnosti navedenih jona u sprečavanju piting korozije, kao i prezentacije mogućnosti primenjenih metoda. Korišćene su elektrohemijske metode za određivanje piting potencijala (Epit) i određivanje kritične temperature pitinga (Tpit). Vrednosti navedenih parametara predstavljaju merilo otpornosti nerđajućih čelika i njihovih zavarenih spojeva prema piting koroziji.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Pitting corrosion testing of stainless steel AISI 304 in chloride solutions
T1  - Ispitivanje piting korozije nerđajućeg čelika AISI 304 u rastvorima hlorida
VL  - 60
IS  - 3
SP  - 101
EP  - 108
DO  - 10.5937/zzk1503101J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana",
year = "2015",
abstract = "Stainless steels and their welded joints are often susceptible to pitting corrosion in solutions containing chloride ions. Testing of pitting corrosion of stainless steels is performed using chemical and electrochemical methods. In this work pitting corrosion of the stainless steel AISI 304 was tested in chloride solutions, without the presence and in the presence of sulphate or nitrate ions. The tests were performed in order to determine the efficiency of these ions to prevent pitting corrosion, as well as to present the capabilities of the methods applied. Electrochemical methods were used to determine the value of pitting potential (Epit) and the critical pitting temperature (Tpit). The values of these parameters represent a measure of the resistance of stainless steels and their welded joints to pitting corrosion., Nerđajući čelici i njihovi zavareni spojevi često podležu piting koroziji u rastvorima koji sadrže hloridne jone. Ispitivanje piting korozije nerđajućih čelika se vrši primenom hemijskih i elektrohemijskih metoda. U ovom radu vršeno je ispitivanje piting korozije nerđajućeg čelika AISI 304 u rastvoru hlorida, bez prisustva i u prisustvu sulfatnih, odnosno nitratnih jona. Ispitivanja su izvedena u cilju određivanje efikasnosti navedenih jona u sprečavanju piting korozije, kao i prezentacije mogućnosti primenjenih metoda. Korišćene su elektrohemijske metode za određivanje piting potencijala (Epit) i određivanje kritične temperature pitinga (Tpit). Vrednosti navedenih parametara predstavljaju merilo otpornosti nerđajućih čelika i njihovih zavarenih spojeva prema piting koroziji.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Pitting corrosion testing of stainless steel AISI 304 in chloride solutions, Ispitivanje piting korozije nerđajućeg čelika AISI 304 u rastvorima hlorida",
volume = "60",
number = "3",
pages = "101-108",
doi = "10.5937/zzk1503101J"
}

Jegdić, B.,& Bobić, B.. (2015). Pitting corrosion testing of stainless steel AISI 304 in chloride solutions. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 60(3), 101-108.
https://doi.org/10.5937/zzk1503101J

Jegdić B, Bobić B. Pitting corrosion testing of stainless steel AISI 304 in chloride solutions. in Zavarivanje i zavarene konstrukcije. 2015;60(3):101-108.
doi:10.5937/zzk1503101J .

Jegdić, Bore, Bobić, Biljana, "Pitting corrosion testing of stainless steel AISI 304 in chloride solutions" in Zavarivanje i zavarene konstrukcije, 60, no. 3 (2015):101-108,
https://doi.org/10.5937/zzk1503101J . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1463
AB  - Heat tinting is a thickening of the naturally occurring oxide layer on the surface of the stainless steels during welding. The thickness of the oxide layer next to the weld depends on the temperature, heating time, and oxygen concentration in the shielding gas. On stainless steels chromium is drawn from below the surface of the metal to form a chromium rich oxide surface layer. During welding, the shielding gas should be used to prevent hit tint formation. If formed, heat tint must be removed in order that the full corrosion resistance of the finished product is restored after welding. Mechanical and/or chemical methods of removing heat tint, that have been usually applied, are described in this article.
AB  - Obrazovanje heat tint-a predstavlja povećanje debljine prirodno formiranog oksidnog sloja na površini nerđajućih čelika, tokom zavarivanja. Debljina heat tint-a u neposrednoj blizini zavarenog spoja zavisi od temperature, vremena zagrevanja i koncentracije kiseonika u zaštitnom gasu. Kod nerđajućih čelika hromom bogat oksid formira se na površini metala, dok je podpovršinski sloj osiromašen hromom. Zavarivanje treba izvoditi u zaštitnom gasu da bi se sprečilo obrazovanje heat tint-a. Ukoliko se formira, ovaj oksid mora biti uklonjen da bi se sačuvala potpuna otpornost prema koroziji zavarenih delova. U ovom radu opisane su mehaničke i/ili hemijske metode za uklanjanje heat tint-a koje se obično primenjuju.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Preventing and removing of heat tint
T1  - Sprečavanje i uklanjanje termičkog oksida (heat tint)
VL  - 59
IS  - 1
SP  - 11
EP  - 19
DO  - 10.5937/zzk1401011J
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana",
year = "2014",
abstract = "Heat tinting is a thickening of the naturally occurring oxide layer on the surface of the stainless steels during welding. The thickness of the oxide layer next to the weld depends on the temperature, heating time, and oxygen concentration in the shielding gas. On stainless steels chromium is drawn from below the surface of the metal to form a chromium rich oxide surface layer. During welding, the shielding gas should be used to prevent hit tint formation. If formed, heat tint must be removed in order that the full corrosion resistance of the finished product is restored after welding. Mechanical and/or chemical methods of removing heat tint, that have been usually applied, are described in this article., Obrazovanje heat tint-a predstavlja povećanje debljine prirodno formiranog oksidnog sloja na površini nerđajućih čelika, tokom zavarivanja. Debljina heat tint-a u neposrednoj blizini zavarenog spoja zavisi od temperature, vremena zagrevanja i koncentracije kiseonika u zaštitnom gasu. Kod nerđajućih čelika hromom bogat oksid formira se na površini metala, dok je podpovršinski sloj osiromašen hromom. Zavarivanje treba izvoditi u zaštitnom gasu da bi se sprečilo obrazovanje heat tint-a. Ukoliko se formira, ovaj oksid mora biti uklonjen da bi se sačuvala potpuna otpornost prema koroziji zavarenih delova. U ovom radu opisane su mehaničke i/ili hemijske metode za uklanjanje heat tint-a koje se obično primenjuju.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Preventing and removing of heat tint, Sprečavanje i uklanjanje termičkog oksida (heat tint)",
volume = "59",
number = "1",
pages = "11-19",
doi = "10.5937/zzk1401011J"
}

Jegdić, B.,& Bobić, B.. (2014). Preventing and removing of heat tint. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 59(1), 11-19.
https://doi.org/10.5937/zzk1401011J

Jegdić B, Bobić B. Preventing and removing of heat tint. in Zavarivanje i zavarene konstrukcije. 2014;59(1):11-19.
doi:10.5937/zzk1401011J .

Jegdić, Bore, Bobić, Biljana, "Preventing and removing of heat tint" in Zavarivanje i zavarene konstrukcije, 59, no. 1 (2014):11-19,
https://doi.org/10.5937/zzk1401011J . .