Correlation between machining-induced surface alterations and stress corrosion cracking susceptibility of au stenitic stainless steels

Wenqian Zhang; Yongchun Li; Hongtao Dong; Chongwen Yang; Xinli Jiang; Deyuan Lou; Huan Xue; Kewei Fang; Xuelin Wang

Journal of Materials Research and Technology (Sep 2023)

Correlation between machining-induced surface alterations and stress corrosion cracking susceptibility of au stenitic stainless steels

Wenqian Zhang,
Yongchun Li,
Hongtao Dong,
Chongwen Yang,
Xinli Jiang,
Deyuan Lou,
Huan Xue,
Kewei Fang,
Xuelin Wang

Affiliations

Wenqian Zhang: Hubei Key Laboratory of Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan, China; Corresponding author.
Yongchun Li: Hubei Key Laboratory of Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan, China
Hongtao Dong: Hubei Key Laboratory of Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan, China
Chongwen Yang: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
Xinli Jiang: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China
Deyuan Lou: Hubei Key Laboratory of Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan, China
Huan Xue: Hubei Key Laboratory of Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan, China
Kewei Fang: Suzhou Nuclear Power Research Institute, Suzhou, China
Xuelin Wang: School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, China; Corresponding author.

Journal volume & issue: Vol. 26
pp. 5076 – 5094

Abstract

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Correlation between machined surface alterations and stress corrosion cracking (SCC) susceptibility of austenitic stainless steels is investigated. The machining-induced residual stress, roughness, micro-hardness and dislocation density were characterized and the surface/subsurface cracks were examined after SCC tests in boiling magnesium chloride solution. The results showed SCC crack initiation and early propagation were highly related to the machining-induced alterations. By establishing a quantitative relationship between the surface characteristics and surface crack density, the comprehensive impact of the residual stress, surface roughness as well as the dislocation density on SCC susceptibility is revealed. The predicted crack density is in good agreement with the measured data. As a result, the SCC susceptibility of the machined surface is described by the surface integrity properties.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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