Investigations into stress corrosion cracking behaviour of AZ91D magnesium alloy in physiological environment

被引：28

作者：

Choudhary, Lokesh ^{[1
]}

Szmerling, Jeremy ^{[2
]}

Goldwasser, Robert ^{[2
]}

Raman, R. K. Singh ^{[1
,2
]}

机构：

[1] Monash Univ Melbourne, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia

[2] Monash Univ Melbourne, Dept Chem Engn, Clayton, Vic 3800, Australia

来源：

11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11) | 2011年 / 10卷

关键词：

Magnesium; Stress corrosion cracking; Slow strain rate testing; Fractography; Physiological; SCC;

D O I：

10.1016/j.proeng.2011.04.087

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Mechanical integrity of biodegradable magnesium alloys implant remains an issue in bio-chemical and corrosive environment of human body because of their unacceptably high degradation rate. Therefore, understanding of simultaneous effect of stress and corrosive environment, i.e., stress corrosion cracking (SCC) of these alloys in physiological environment is essential before their actual use. To establish the SCC susceptibility, slow strain rate testing (SSRT) was carried out on the tensile specimens of a magnesium alloy, AZ91D in modified simulated body fluid (m-SBF) and air at different strain rates. Fracture surfaces of tested specimens were analysed using scanning electron microscopy (SEM) in order to examine the features of SCC. The alloy was found to be susceptible to SCC. (C) 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11

引用

页数：6

共 13 条

[1]

Stress corrosion cracking of new Mg-Zn-Mn wrought alloys containing Si [J].