Open AccessMicrostructure, roughness, and corrosion resistance of X5CrNi18-10 austenite stainless steel welded joint
Author(s) -
M Bojana Radojković,
Bore Jegdić,
N Jovanka Kovacina,
Igor Stevanovic,
Dunja Marunkić
Publication year - 2021
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc201203007r
Subject(s) - metallurgy , materials science , base metal , welding , microstructure , corrosion , intergranular corrosion , pitting corrosion , joint (building) , austenite , surface finish , structural engineering , engineering
The influence of the microstructure of X5CrNi18-10 stainless steel welded joint on its resistance to general, pitting, and intergranular corrosion was analyzed. The structure of weld metal, heat affected zone (HAZ) and base metal before and after electrochemical testing was analyzed using SEM/EDS. The influence of the roughness level of the welded joint on its resistance to the mentioned types of corrosion was also examined. Although the degree of sensitization of HAZ was significantly lower than the limit value, HAZ showed a noticeably greater tendency to general and pitting corrosion than weld metal and base metal. Polishing has been shown to improve significantly the corrosion resistance of HAZ than in other parts of a welded joint.