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Influence of welding parameters on pit initiation and pit growth in welded joints of X5CrNi18-10 stainless steel

Authorized Users Only
2019
Authors
Jegdić, Bore
Bobić, Biljana
Radojković, Bojana
Alić, Behar
Article (Published version)
Metadata
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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 ch...romium 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.

Keywords:
Pitting corrosion / Austenitic stainless steels / Welded joints / Nitrogen / Electrochemical methods
Source:
Welding in the World, 2019, 63, 1, 167-179
Publisher:
  • Springer
Funding / projects:
  • Investigation and Optimization of the Technological and Functional Performance of the Ventilation Mill in the Thermal Power Plant Kostolac B (RS-34028)
  • Development of the tribological micro/nano two component and hybrid selflubricating composites (RS-35021)

DOI: 10.1007/s40194-018-0644-0

ISSN: 0043-2288; 1878-6669

WoS: 000463273800018

Scopus: 2-s2.0-85060284923
[ Google Scholar ]
3
2
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/3375
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
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 . .

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