TY  - JOUR
AU  - Radojković, Bojana
AU  - Kovačina, Jovanka
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Alić, Behar
AU  - Marunkić, Dunja
AU  - Simović, Anđela
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3838
AB  - This study considers the corrosion behavior of the X5CrNi18 10 stainless steel‐welded joint in NaCl solution, with and without the presence of several corrosion inhibitors (NaNO3 , Ce(NO3)3, and CeCl3). The degree of sensitization of the welded joint to intergranular corrosion is determined using the electrochemical potentio kinetic reactivation method with a double‐loop method. Pitting corrosion tests are performed by the potentiodynamic method. Resistance to general corrosion and the stability of the passive film is assessed based on the results of electrochemical impedance spectroscopy measurements, as well as on the values of the corrosion and passivation current. The main goal of this study is to determine the relation of the welded joint microstructure to general and pitting corrosion in the presence of the corrosion inhibitors. The value of pitting potential for the base metal and weld metal in the presence of the NaNO3 or Ce(NO3)3 inhibitor is shifted to potentials in the transpassive area. The pitting potential for the heat‐affected zone also possesses a noticeable higher value. However, nitrate ions do not increase the general corrosion resistance of any part of the welded joint. CeCl3 does not increase resistance to general or pitting corrosion.
PB  - Wiley‐VCH GmbH
T2  - Materials and Corrosion
T1  - Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel ‐ welded joint
VL  - 72
SP  - 694
EP  - 707
DO  - 10.1002/maco.202012039
ER  - 

@article{
author = "Radojković, Bojana and Kovačina, Jovanka and Jegdić, Bore and Bobić, Biljana and Alić, Behar and Marunkić, Dunja and Simović, Anđela",
year = "2020",
abstract = "This study considers the corrosion behavior of the X5CrNi18 10 stainless steel‐welded joint in NaCl solution, with and without the presence of several corrosion inhibitors (NaNO3 , Ce(NO3)3, and CeCl3). The degree of sensitization of the welded joint to intergranular corrosion is determined using the electrochemical potentio kinetic reactivation method with a double‐loop method. Pitting corrosion tests are performed by the potentiodynamic method. Resistance to general corrosion and the stability of the passive film is assessed based on the results of electrochemical impedance spectroscopy measurements, as well as on the values of the corrosion and passivation current. The main goal of this study is to determine the relation of the welded joint microstructure to general and pitting corrosion in the presence of the corrosion inhibitors. The value of pitting potential for the base metal and weld metal in the presence of the NaNO3 or Ce(NO3)3 inhibitor is shifted to potentials in the transpassive area. The pitting potential for the heat‐affected zone also possesses a noticeable higher value. However, nitrate ions do not increase the general corrosion resistance of any part of the welded joint. CeCl3 does not increase resistance to general or pitting corrosion.",
publisher = "Wiley‐VCH GmbH",
journal = "Materials and Corrosion",
title = "Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel ‐ welded joint",
volume = "72",
pages = "694-707",
doi = "10.1002/maco.202012039"
}

Radojković, B., Kovačina, J., Jegdić, B., Bobić, B., Alić, B., Marunkić, D.,& Simović, A.. (2020). Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel ‐ welded joint. in Materials and Corrosion
Wiley‐VCH GmbH., 72, 694-707.
https://doi.org/10.1002/maco.202012039

Radojković B, Kovačina J, Jegdić B, Bobić B, Alić B, Marunkić D, Simović A. Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel ‐ welded joint. in Materials and Corrosion. 2020;72:694-707.
doi:10.1002/maco.202012039 .

Radojković, Bojana, Kovačina, Jovanka, Jegdić, Bore, Bobić, Biljana, Alić, Behar, Marunkić, Dunja, Simović, Anđela, "Influence of inhibitors on the corrosion behavior of the X5CrNi18 10 stainless steel ‐ welded joint" in Materials and Corrosion, 72 (2020):694-707,
https://doi.org/10.1002/maco.202012039 . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Radojković, Bojana
AU  - Alić, Behar
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3375
AB  - The influence of welding parameters on the resistance to pitting corrosion in welded joints of X5CrNi18-10 stainless steel was studied. Welding was performed by a TIG procedure in a shielding gas containing different amounts of nitrogen. The welding speed, the deposition rate of the filler wire, and the shielding gas flow rate were constant, which allowed the nitrogen content in the weld metal to be directly dependent on the nitrogen content in the shielding gas. It was shown that welding current and arc energy had a significantly lower influence on the resistance to pit formation and pit growth, than the nitrogen content in the shielding gas. Pitting corrosion testing was conducted using the potentiodynamic polarization method. The resistance to pit formation increases with the increase in nitrogen content in the weld metal, while the resistance to pit growth decreases. The microstructure of the weld metal becomes more homogeneous in the presence of nitrogen and the distribution of chromium more uniform, which leads to the increased resistance to pit formation. Also, due to the formation of ammonia ions, the pH value of the solution within the pit is higher than in the bulk solution, which also increases the resistance to pit formation.
PB  - Springer
T2  - Welding in the World
T1  - Influence of welding parameters on pit initiation and pit growth in welded joints of X5CrNi18-10 stainless steel
VL  - 63
IS  - 1
SP  - 167
EP  - 179
DO  - 10.1007/s40194-018-0644-0
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Radojković, Bojana and Alić, Behar",
year = "2019",
abstract = "The influence of welding parameters on the resistance to pitting corrosion in welded joints of X5CrNi18-10 stainless steel was studied. Welding was performed by a TIG procedure in a shielding gas containing different amounts of nitrogen. The welding speed, the deposition rate of the filler wire, and the shielding gas flow rate were constant, which allowed the nitrogen content in the weld metal to be directly dependent on the nitrogen content in the shielding gas. It was shown that welding current and arc energy had a significantly lower influence on the resistance to pit formation and pit growth, than the nitrogen content in the shielding gas. Pitting corrosion testing was conducted using the potentiodynamic polarization method. The resistance to pit formation increases with the increase in nitrogen content in the weld metal, while the resistance to pit growth decreases. The microstructure of the weld metal becomes more homogeneous in the presence of nitrogen and the distribution of chromium more uniform, which leads to the increased resistance to pit formation. Also, due to the formation of ammonia ions, the pH value of the solution within the pit is higher than in the bulk solution, which also increases the resistance to pit formation.",
publisher = "Springer",
journal = "Welding in the World",
title = "Influence of welding parameters on pit initiation and pit growth in welded joints of X5CrNi18-10 stainless steel",
volume = "63",
number = "1",
pages = "167-179",
doi = "10.1007/s40194-018-0644-0"
}

Jegdić, B., Bobić, B., Radojković, B.,& Alić, B.. (2019). Influence of welding parameters on pit initiation and pit growth in welded joints of X5CrNi18-10 stainless steel. in Welding in the World
Springer., 63(1), 167-179.
https://doi.org/10.1007/s40194-018-0644-0

Jegdić B, Bobić B, Radojković B, Alić B. Influence of welding parameters on pit initiation and pit growth in welded joints of X5CrNi18-10 stainless steel. in Welding in the World. 2019;63(1):167-179.
doi:10.1007/s40194-018-0644-0 .

Jegdić, Bore, Bobić, Biljana, Radojković, Bojana, Alić, Behar, "Influence of welding parameters on pit initiation and pit growth in welded joints of X5CrNi18-10 stainless steel" in Welding in the World, 63, no. 1 (2019):167-179,
https://doi.org/10.1007/s40194-018-0644-0 . .

TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Radojković, Bojana
AU  - Alić, Behar
AU  - Radovanović, Lidija D.
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2498
AB  - This paper considers the influence of nitrogen in the shielding gas during TIG welding as well as the influence of a welding current level on the resistance to pitting corrosion and intergranular corrosion in welded joints of X5CrNi18-10 stainless steel. Testing of pitting corrosion was carried out using the potentiodynamic method, while intergranular corrosion was tested with the Double-Loop Electrochemical Potentiokinetic Reactivation method. Pitting corrosion resistance of welded joints (the weld metal and the heat affected zone) is higher in the presence of nitrogen in the shielding gas, while integranular corrosion resistance remains unchanged. Pitting corrosion resistance of the heat affected zone in the welded joint formed in nitrogen-free shielding gas is lower than in the base metal, while the weld metal has similar pitting corrosion resistance as the base metal. With an increase in a welding current level, pitting corrosion resistance and resistance to intergranular corrosion of welded joints decrease. The passivation current density is shown to be a good indicator of pitting corrosion resistance of welded joints. Hardness values of the weld metal and the heat affected zone are slightly lower than the base metal hardness value.
PB  - Elsevier
T2  - Journal of Materials Processing Technology
T1  - Corrosion resistance of welded joints of X5CrNi18-10 stainless steel
VL  - 266
SP  - 579
EP  - 587
DO  - 10.1016/j.jmatprotec.2018.11.029
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Radojković, Bojana and Alić, Behar and Radovanović, Lidija D.",
year = "2019",
abstract = "This paper considers the influence of nitrogen in the shielding gas during TIG welding as well as the influence of a welding current level on the resistance to pitting corrosion and intergranular corrosion in welded joints of X5CrNi18-10 stainless steel. Testing of pitting corrosion was carried out using the potentiodynamic method, while intergranular corrosion was tested with the Double-Loop Electrochemical Potentiokinetic Reactivation method. Pitting corrosion resistance of welded joints (the weld metal and the heat affected zone) is higher in the presence of nitrogen in the shielding gas, while integranular corrosion resistance remains unchanged. Pitting corrosion resistance of the heat affected zone in the welded joint formed in nitrogen-free shielding gas is lower than in the base metal, while the weld metal has similar pitting corrosion resistance as the base metal. With an increase in a welding current level, pitting corrosion resistance and resistance to intergranular corrosion of welded joints decrease. The passivation current density is shown to be a good indicator of pitting corrosion resistance of welded joints. Hardness values of the weld metal and the heat affected zone are slightly lower than the base metal hardness value.",
publisher = "Elsevier",
journal = "Journal of Materials Processing Technology",
title = "Corrosion resistance of welded joints of X5CrNi18-10 stainless steel",
volume = "266",
pages = "579-587",
doi = "10.1016/j.jmatprotec.2018.11.029"
}

Jegdić, B., Bobić, B., Radojković, B., Alić, B.,& Radovanović, L. D.. (2019). Corrosion resistance of welded joints of X5CrNi18-10 stainless steel. in Journal of Materials Processing Technology
Elsevier., 266, 579-587.
https://doi.org/10.1016/j.jmatprotec.2018.11.029

Jegdić B, Bobić B, Radojković B, Alić B, Radovanović LD. Corrosion resistance of welded joints of X5CrNi18-10 stainless steel. in Journal of Materials Processing Technology. 2019;266:579-587.
doi:10.1016/j.jmatprotec.2018.11.029 .

Jegdić, Bore, Bobić, Biljana, Radojković, Bojana, Alić, Behar, Radovanović, Lidija D., "Corrosion resistance of welded joints of X5CrNi18-10 stainless steel" in Journal of Materials Processing Technology, 266 (2019):579-587,
https://doi.org/10.1016/j.jmatprotec.2018.11.029 . .

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
AU  - Alić, Behar
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2363
AB  - The resistance to pitting and intergranular corrosion of the welded joint of X5CrNi18-10 austenitic stainless steel is analyzed in this paper. The resistance of the welded joint to intergranular corrosion does not depend on the nitrogen content in the shielding gas. It depends on the heat input into the welded joint, that is, on the welding current intensity. The resistance to pitting corrosion depends on the content of nitrogen in the shielding gas and on the welding current intensity. With the increase in the nitrogen content in the shielding gas, the resistance of the heat affected zone (HAZ) to pitting corrosion increases. The welding current intensity (heat input into the welded joint) shows two opposite effects. On the one hand, the increase of the heat input into the welded joint causes a more intensive precipitation of chromium carbides along the grain boundaries, which then leads to depletion in chromium of the grain boundary areas. The sensitization degree of the HAZ is thus increased and the formation of pits easier. On the other hand, with the increase in the welding current intensity, diffusion of nitrogen from the weld metal into the HAZ is facilitated, which contributes to the increased HAZ resistance to pitting corrosion. Possible mechanisms for increasing the HAZ resistance to pitting corrosion in the presence of nitrogen are also considered.
PB  - Wiley
T2  - Materials and Corrosion-Werkstoffe Und Korrosion
T1  - Influence of the welding current intensity and nitrogen content on the corrosion resistance of austenitic stainless steels
VL  - 69
IS  - 12
SP  - 1758
EP  - 1769
DO  - 10.1002/maco.201810182
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Radojković, Bojana and Alić, Behar",
year = "2018",
abstract = "The resistance to pitting and intergranular corrosion of the welded joint of X5CrNi18-10 austenitic stainless steel is analyzed in this paper. The resistance of the welded joint to intergranular corrosion does not depend on the nitrogen content in the shielding gas. It depends on the heat input into the welded joint, that is, on the welding current intensity. The resistance to pitting corrosion depends on the content of nitrogen in the shielding gas and on the welding current intensity. With the increase in the nitrogen content in the shielding gas, the resistance of the heat affected zone (HAZ) to pitting corrosion increases. The welding current intensity (heat input into the welded joint) shows two opposite effects. On the one hand, the increase of the heat input into the welded joint causes a more intensive precipitation of chromium carbides along the grain boundaries, which then leads to depletion in chromium of the grain boundary areas. The sensitization degree of the HAZ is thus increased and the formation of pits easier. On the other hand, with the increase in the welding current intensity, diffusion of nitrogen from the weld metal into the HAZ is facilitated, which contributes to the increased HAZ resistance to pitting corrosion. Possible mechanisms for increasing the HAZ resistance to pitting corrosion in the presence of nitrogen are also considered.",
publisher = "Wiley",
journal = "Materials and Corrosion-Werkstoffe Und Korrosion",
title = "Influence of the welding current intensity and nitrogen content on the corrosion resistance of austenitic stainless steels",
volume = "69",
number = "12",
pages = "1758-1769",
doi = "10.1002/maco.201810182"
}

Jegdić, B., Bobić, B., Radojković, B.,& Alić, B.. (2018). Influence of the welding current intensity and nitrogen content on the corrosion resistance of austenitic stainless steels. in Materials and Corrosion-Werkstoffe Und Korrosion
Wiley., 69(12), 1758-1769.
https://doi.org/10.1002/maco.201810182

Jegdić B, Bobić B, Radojković B, Alić B. Influence of the welding current intensity and nitrogen content on the corrosion resistance of austenitic stainless steels. in Materials and Corrosion-Werkstoffe Und Korrosion. 2018;69(12):1758-1769.
doi:10.1002/maco.201810182 .

Jegdić, Bore, Bobić, Biljana, Radojković, Bojana, Alić, Behar, "Influence of the welding current intensity and nitrogen content on the corrosion resistance of austenitic stainless steels" in Materials and Corrosion-Werkstoffe Und Korrosion, 69, no. 12 (2018):1758-1769,
https://doi.org/10.1002/maco.201810182 . .

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  - 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  - Stevanović, Jasmina
AU  - Alić, Behar
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3651
AB  - Determination of the susceptibility of austenitic stainless steel X5CrNi18-10 to intergranular corrosion (IGC) is performed by measuring the corrosion potential Ecorr in a drop of a test solution with specific chemical composition. It has been shown that a good correlation exists between the results obtained by Ecorr measurements in a drop of the test solution and the results obtained by the double loop electrochemical potentiokinetic reactivation method (DL EPR). The results are confirmed by SEM analysis of the stainless steel surface after the IGC test. The method of Ecorr measurements is a simple non-destructive method that provides qualitative information on the susceptibility of the stainless steel to IGC. The DL EPR method is a quantitative method that can determine small differences in the susceptibility of stainless steel to IGC. Simple and cheap equipment is required to perform Ecorr measurements. The method is easy to perform on stainless steel structures in the field.
AB  - Određivanje sklonosti austenitnog nerđajućeg čelika X5CrNi18-10 prema interkristalnoj koroziji izvršeno je na osnovu merenja korozionog potencijala Ekor u kapi rastvora definisanog sastava. Pokazano je da postoji dobra saglasnost dobijenih rezultata sa rezultatima ispitivanja interkristalne korozije primenom metode elektrohemijske potenciokinetičke reaktivacije sa povratnom petljom (DL EPR). Dobijeni rezultati su potvrđeni SEM analizom površine čelika posle ispitivanja interkristalne korozije navedenim metodama. Metoda merenja Ekor u kapi rastvora je jednostavna, nerazarajuća metoda koja daje kvalitativne podatke o sklonosti čelika prema interkristalnoj koroziji, dok je DL EPR metoda kvantitativna, kojom se mogu odrediti male razlike u sklonosti nerđajućih čelika prema interkristalnoj koroziji. Za izvođenje ispitivanja metodom merenja Ekor u kapi rastvora potrebna je znatno jeftinija i jednostavnija oprema. Ova metoda se lako izvodi na gotovim konstrukcijama, na terenu.
PB  - Society for Structural Integrity and Life
T2  - Structural Integrity and Life
T2  - Structural Integrity and LifeStructural Integr. Vek Konstr.
T1  - Field applicable methods for intergranular corrosion testing of stainless steels structures
T1  - Metode ispitivanja interkristalne korozije na konstrukcijama od nerđajućh čelika na terenu
VL  - 16
IS  - 2
SP  - 87
EP  - 93
UR  - https://hdl.handle.net/21.15107/rcub_cer_3651
ER  - 

@article{
author = "Jegdić, Bore and Bobić, Biljana and Stevanović, Jasmina and Alić, Behar",
year = "2016",
abstract = "Determination of the susceptibility of austenitic stainless steel X5CrNi18-10 to intergranular corrosion (IGC) is performed by measuring the corrosion potential Ecorr in a drop of a test solution with specific chemical composition. It has been shown that a good correlation exists between the results obtained by Ecorr measurements in a drop of the test solution and the results obtained by the double loop electrochemical potentiokinetic reactivation method (DL EPR). The results are confirmed by SEM analysis of the stainless steel surface after the IGC test. The method of Ecorr measurements is a simple non-destructive method that provides qualitative information on the susceptibility of the stainless steel to IGC. The DL EPR method is a quantitative method that can determine small differences in the susceptibility of stainless steel to IGC. Simple and cheap equipment is required to perform Ecorr measurements. The method is easy to perform on stainless steel structures in the field., Određivanje sklonosti austenitnog nerđajućeg čelika X5CrNi18-10 prema interkristalnoj koroziji izvršeno je na osnovu merenja korozionog potencijala Ekor u kapi rastvora definisanog sastava. Pokazano je da postoji dobra saglasnost dobijenih rezultata sa rezultatima ispitivanja interkristalne korozije primenom metode elektrohemijske potenciokinetičke reaktivacije sa povratnom petljom (DL EPR). Dobijeni rezultati su potvrđeni SEM analizom površine čelika posle ispitivanja interkristalne korozije navedenim metodama. Metoda merenja Ekor u kapi rastvora je jednostavna, nerazarajuća metoda koja daje kvalitativne podatke o sklonosti čelika prema interkristalnoj koroziji, dok je DL EPR metoda kvantitativna, kojom se mogu odrediti male razlike u sklonosti nerđajućih čelika prema interkristalnoj koroziji. Za izvođenje ispitivanja metodom merenja Ekor u kapi rastvora potrebna je znatno jeftinija i jednostavnija oprema. Ova metoda se lako izvodi na gotovim konstrukcijama, na terenu.",
publisher = "Society for Structural Integrity and Life",
journal = "Structural Integrity and Life, Structural Integrity and LifeStructural Integr. Vek Konstr.",
title = "Field applicable methods for intergranular corrosion testing of stainless steels structures, Metode ispitivanja interkristalne korozije na konstrukcijama od nerđajućh čelika na terenu",
volume = "16",
number = "2",
pages = "87-93",
url = "https://hdl.handle.net/21.15107/rcub_cer_3651"
}

Jegdić, B., Bobić, B., Stevanović, J.,& Alić, B.. (2016). Field applicable methods for intergranular corrosion testing of stainless steels structures. in Structural Integrity and Life
Society for Structural Integrity and Life., 16(2), 87-93.
https://hdl.handle.net/21.15107/rcub_cer_3651

Jegdić B, Bobić B, Stevanović J, Alić B. Field applicable methods for intergranular corrosion testing of stainless steels structures. in Structural Integrity and Life. 2016;16(2):87-93.
https://hdl.handle.net/21.15107/rcub_cer_3651 .

Jegdić, Bore, Bobić, Biljana, Stevanović, Jasmina, Alić, Behar, "Field applicable methods for intergranular corrosion testing of stainless steels structures" in Structural Integrity and Life, 16, no. 2 (2016):87-93,
https://hdl.handle.net/21.15107/rcub_cer_3651 .