STRESS CORROSION CRACKING BEHAVIOUR OF BIODEGRADABLE MAGNESIUM-BASED ALLOY IN SIMULATED PHYSIOLOGICAL CONDITION

摘要

In this study, the stress corrosion cracking susceptibility of Mg-AI-Zn alloy in simulated body fluid (SBF) was evaluated using slow strain rate test (SSRT) method. The SSRT results showed that the mechanical properties such as ultimate tensile strength and elongation-to-fracture decreased marginally (17% and 21%, respectively) in comparison with these properties in air, suggesting that stress corrosion cracking is not substantial for Mg-AI-Zn alloy in simulated physiological condition.