Modeling the temperature dependent effect of twinning on the behavior of magnesium alloy AZ31B sheet

Uniaxial compression test data were obtained from magnesium alloy AZ31B sheet material tested along three sample directions (rolling, transverse and normal direction) over the temperature range T = 22–250 °C. The yield point during in-plane compression is insensitive to temperature, up to 200 °C, suggesting that athermal mechanisms are responsible for yielding. The in-plane compression samples exhibit very low r-values, which provides another...