Corrosion and stress corrosion cracking of ultra-high-purity Mg5Zn

被引：34

作者：

Shi, Zhiming ^{[1
,2
]}

Hofstetter, Joelle ^{[3
]}

Cao, Fuyong ^{[1
]}

Uggowitzer, Peter J. ^{[3
]}

Dargusch, Matthew S. ^{[2
]}

Atrens, Andrej ^{[1
]}

机构：

[1] Univ Queensland, Sch Mech & Min Engn, Mat Engn, Brisbane, Qld 4072, Australia

[2] Univ Queensland, Ctr Adv Mat Proc & Mfg AMPAM, Brisbane, Qld 4072, Australia

[3] Swiss Fed Inst Technol, Dept Mat, CH-8093 Zurich, Switzerland

来源：

CORROSION SCIENCE | 2015年 / 93卷

基金：

澳大利亚研究理事会;

关键词：

Magnesium; Weight loss; SEM; Stress corrosion; MG-AL ALLOYS; MAGNESIUM ALLOYS; IN-VITRO; PERFORMANCE; SCC; EV31A;

D O I：

10.1016/j.corsci.2015.01.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports on the measurement of the corrosion rate, and the stress corrosion cracking threshold stress, for ultra-high-purity Mg-5Zn. The corrosion rate was higher than the intrinsic corrosion rate of ultra-high-purity Mg, attributed to the quality of the corrosion product film. The threshold stress for stress corrosion cracking, at an applied stress rate of 0.00016 MPa s(-1), was equal to 0.7 times the yield stress in air. The ductility of the cracking indicated that the stress corrosion cracking mechanism was probably hydrogen enhanced localized plasticity. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：330 / 335

页数：6

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