Deformation behavior of a twin-roll-cast Mg-6Zn-0.5Mn-0.3Cu-0.02Zr alloy at intermediate temperatures

Abstract

Mechanical properties of a twin roll cast Mg-6Zn-0.5Mn-0.3Cu-0.02Zr were measured at temperatures from 423 to 523 K. Constant strain rate, strain rate change, and temperature change tests were employed to characterize the plastic flow behavior of the alloy. It was observed that, in low strain rate and high temperature regime, the alloy follows a power law behavior but the power law breaks down at high strain rates and low temperatures. Transient experiments were also conducted to identify the deformation mechanism.