Effect of Boron on Stress Corrosion Resistance of S31254 Super‐Austenitic Stainless Steel After Cold Deformation

Author:

Xiao Taike1,Liang Xiaohong1ORCID,Cao Zhuangzhuang1,Han Peide1,Ma Jinyao2,Liang Hongli1,Zhang Caili1,Dong Nan1

Affiliation:

1. College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 China

2. Instrumental Analysis Center Taiyuan University of Technology Taiyuan 030024 China

Abstract

The effect of boron (B) on stress corrosion resistance of S31254 in the presence of residual stresses has been studied. The microstructure and corrosion resistance of S31254 containing B at different levels of cold deformation are analyzed in this study. In the results, it is shown that B favors the improvement of deformation uniformity of S31254. The grain boundary (GB) and slip bands have better corrosion resistance at 5% deformation, and the overall corrosion resistance is better than that of the undeformed state, with smaller passivation current density and narrower width of GB corrosion grooves, especially for the 40B samples. At 30% deformation, the overall corrosion resistance of 40B S31254 is better than 0B due to improved deformation uniformity.

Funder

Natural Science Foundation of Shanxi Province

National Natural Science Foundation of China

Publisher

Wiley

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