The microstructure and texture evolution of as-extruded Mg-0.96 wt%Al-5.82 wt%Y (denoted as Mg–1Al–6Y) alloy with strain at a temperature of 350 °C and a strain rate of 0.1 s⁻¹ were studied using ex-situ electron backscatter diffraction (EBSD). Moreover, the deformation mechanism was systematically analyzed. The results shown that weak <2-1-11> rare-earth texture and no twinning were observed in the as-extruded Mg–1Al–6Y alloy. The hot compression curve exhibited obvious work-hardening characteristics with a yield strength of 98 MPa. In the initial stage of deformation, {10–12} extension twinning was formed in some grains. As the strain increased, the number of {10–12} extension twinning and texture intensity gradually decreased, whereas the amount of low-angle grain boundaries increased. The Schmid factor (SF) of pyramidal slip remained at ∼0.4. In addition, the TEM characterization revealed that as the strain increased, dislocations multiplied, and the pyramidal <c+a> dislocation was always observed. Therefore, the reduction of twinning and activation of pyramidal <c+a> slip lead to the dominance of slip during the deformation. Hence, work hardening appeared in the compression curve of Mg–1Al–6Y alloy.

作为挤出的微观结构和组织进化Mg的0.96％（重量）的Al-5.82重量％Y（表示为Mg的1AL-6Y）合金与应变在350℃的温度和0.1秒的应变速率^-1进行了研究利用易地电子背散射衍射（EBSD）。此外，系统地分析了变形机理。结果表明，在挤压的Mg-1Al-6Y合金中，未观察到弱的<2-1-11>稀土质地，没有孪生现象。热压缩曲线表现出明显的加工硬化特性，屈服强度为98 MPa。在变形的初始阶段，在某些晶粒中形成了{10-12}延伸孪晶。随着应变的增加，{10-12}延伸孪晶的数量和织构强度逐渐降低，而低角度晶界的数量增加。金字塔滑移的施密特因子（SF）保持在〜0.4。此外，TEM表征表明，随着应变的增加，位错成倍增加，并且始终观察到金字塔型<c + a>位错。因此，孪晶的减少和锥体<c + a>滑移的激活导致滑移在变形过程中占主导地位。因此，在Mg-1Al-6Y合金的压缩曲线中出现了加工硬化。