Texture evolution of rolled Mg-3Al-1Zn alloy undergoing a {10-12} twinning dominant strain path change

The texture modification, caused by {10-12}-{10-12} double twinning, in rolled Mg-3Al-1Zn alloy was investigated by carrying out consecutive in-plane compressions along two orthogonal directions in combination with an electron backscatter diffraction measurement and a Schmid factor analysis. The results revealed that the Schmid law still governs twin variant selection, thereby controlling texture evolution, however, the specific crystallographic feature of {10-12} twinned region in which the c-axis orients to the compression direction with a variation of ±30° on the rolling plane and one prismatic plane including the rotation axis of {10-12} twinning, corresponding to an a-axis, is aligned almost parallel to the rolling plane gives rise to a significantly different texture evolution of {10-12}-{10-12} double twinned region as compared to {10-12} twinned region.