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Influence of the welding current intensity and nitrogen content on the corrosion resistance of austenitic stainless steels

Samo za registrovane korisnike
2018
Autori
Jegdić, Bore
Bobić, Biljana
Radojković, Bojana
Alić, Behar
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
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.

Ključne reči:
intergranular corrosion / pitting corrosion / stainless steels / test methods / welded joint
Izvor:
Materials and Corrosion-Werkstoffe Und Korrosion, 2018, 69, 12, 1758-1769
Izdavač:
  • Wiley-V C H Verlag Gmbh, Weinheim
Projekti:
  • Istraživanje i optimizacija tehnoloških i funkcionalnih performansi ventilacionog mlina termoelektrane Kostolac B (RS-34028)
  • Razvoj triboloških mikro/nano dvokomponentnih i hibridnih samopodmazujućih kompozita (RS-35021)

DOI: 10.1002/maco.201810182

ISSN: 0947-5117

WoS: 000452197200007

Scopus: 2-s2.0-85050868975
[ Google Scholar ]
2
2
URI
http://cer.ihtm.bg.ac.rs/handle/123456789/2363
Kolekcije
  • Radovi istraživača / Researchers' publications
Institucija
IHTM
TY  - JOUR
AU  - Jegdić, Bore
AU  - Bobić, Biljana
AU  - Radojković, Bojana
AU  - Alić, Behar
PY  - 2018
UR  - http://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-V C H Verlag Gmbh, Weinheim
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",
url = "http://cer.ihtm.bg.ac.rs/handle/123456789/2363",
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-V C H Verlag Gmbh, Weinheim",
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. Influence of the welding current intensity and nitrogen content on the corrosion resistance of austenitic stainless steels. Materials and Corrosion-Werkstoffe Und Korrosion. 2018;69(12):1758-1769
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.
Materials and Corrosion-Werkstoffe Und KorrosionWiley-V C H Verlag Gmbh, Weinheim., 69(12), 1758-1769.
https://doi.org/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" 69, no. 12 (2018):1758-1769,
https://doi.org/10.1002/maco.201810182 .

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