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Testing of intergranular and pitting corrosion in sensitized welded joints of austenitic stainless steel

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2017
osnovni rad (913.6Kb)
Authors
Jegdić, Bore
Bobić, Biljana
Bošnjakov, Milica
Behar, Alić
Article (Published version)
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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).
Keywords:
stainless steel / welded joints / pitting corrosion / intergranular corrosion / electrochemical test methods
Source:
Metallurgical & Materials Engineering, 2017, 23, 2, 109-117
Publisher:
  • Serbia : Association of Metallurgical Engineers of Serbia
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 covering and core production technology based on local raw materials for manufacturing of special coated electrodes designed for steel arc welding (RS-34016)

DOI: 10.30544/274

ISSN: 2217-8961

WoS: 000408834400002

[ Google Scholar ]
URI
https://metall-mater-eng.com/index.php/home/article/view/274
https://cer.ihtm.bg.ac.rs/handle/123456789/3914
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
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 . .

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