Stress corrosion cracking behaviour of a surface-modified magnesium alloy

SCRIPTA MATERIALIA

卷:59

Article

Srinivasan, P. Bala¹  Blawert, C.¹  Dietzel, W.¹  Kainer, K. U.¹ 

[1] GKSS Forschungszentrum Geesthacht GmbH, Inst Mat Res, D-21502 Geesthacht, Germany

关键词: magnesium alloy;    plasma electrolytic oxidation;    microstructure;    electrochemical behaviour;    stress corrosion cracking;   

DOI  :  10.1016/j.scriptamat.2008.02.032

来源: Elsevier

【 摘 要 】

The effect of plasma electrolytic oxidation (PEO) treatment on the stress corrosion cracking (SCC) of a cast magnesium alloy was assessed. Even though the PEO coating has offered improved corrosion resistance, as evidenced in electrochemical tests, its effect in improving the SCC resistance in ASTM D1384 test solution was only marginal. The SCC behaviour of PEO-coated specimens was attributed to the development of microcracks in the coating, leading to cracking of the substrate under slow strain rate test conditions. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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