Twinning-induced softening in polycrystalline AM30 Mg alloy at moderate temperatures

The effect of deformation twinning on the strain hardening behavior of a polycrystalline AM30 Mg alloy was investigated. At temperatures <150 °C, somewhat unusually, the n value increases with increasing temperature and decreasing strain rate. The softening effect induced by double and contraction twinning is responsible for the abnormal strain hardening behavior.