Abstract
Magnesium alloy have been used as a structural material in automobile components for its light weight and recycle reliability. However, the magnesium alloy is very active and electrochemically less noble. Yet, the control of stress corrosion cracking (SCC) is becoming a major issue in structural application. In this study, therefore, the evaluation to SCC of AZ61 magnesium alloy is investigated with slow strain rate technique (SSRT) in sodium chloride solutions at 298K. The susceptibility to SCC increases when sodium chloride concentration becomes high. Although the SCC susceptibility in 0.004wt% sodium chloride solution decreases with an increase of strain rate, the dependence on strain rate becomes larger as compared with 4wt% sodium chloride solution.
