Journal
CORROSION SCIENCE
Volume 108, Issue -, Pages 173-184Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.03.008
Keywords
Stainless steel; Stress corrosion
Funding
- National Natural Science Foundation of China [51375182]
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The effect of machining-induced surface residual stress on the stress corrosion cracking (SCC) initiation in 316 stainless steel was investigated in boiling magnesium chloride solution. The crack density was used to evaluate the SCC initiation and propagation at different residual stress levels. The results showed a strong correlation between the residual stress and the resultant micro-crack density. When the residual stress reached a critical value, the micro-crack density increased significantly in the very early phase, and the critical stress is 190 MPa for 316 stainless steel. Additionally, the cracking behavior could be correlated with the machining effects on the surface layer. (C) 2016 Elsevier Ltd. All rights reserved.
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