In-plane uniaxial tension of AZ31 magnesium alloy sheet with non-basal texture has been conducted in order to demonstrate the effects of loading direction on the microstructure evolution and mechanical properties at ambient temperature. Loading axes are chosen to be along five directions distributed between rolling direction (RD) and transverse direction (TD), allowing various activities in involved slip and twinning modes to take place. As for twinning modes, electron backscattered diffraction observations confirm that the contribution of \({{\{ 10\overline{1}1\} }}\) compression twinning is minimal to the plastic deformation of all deformed samples. By comparison, \({{\{ 10\overline{1}2\} }}\) extension twinning (ET) not only serves as an important carrier on sustaining and accommodating plastic strain but also contributes to the emergence of TD-component texture with the progression of plastic strain. In terms of slip modes, analysis on Schmid factor demonstrates that the increasing tilted angle between loading direction and RD of sheet is unfavorable to the activation of basal <a> slip, whereas it contributes to the activation of prismatic <a> slip. These observations consequently explain the increasing tendency of 0.2% proof yield stress. Moreover, the activations of basal <a> slip and \({{\{ 10\overline{1}2\} }}\) ET collectively contribute to the concentration of two tilted basal poles toward normal direction. With increasing angle between loading direction and RD, the activations of basal <a> slip and \({{\{ 10\overline{1}2\} }}\) ET are gradually weakened. This leads to a weakening tendency about concentration of two tilted basal poles, a generally increasing tendency about Lankford value (r-value) and a generally decreasing tendency about strain-hardening exponent (n-value).

为了证明加载方向对室温下组织演变和力学性能的影响，对具有非基底织构的 AZ31 镁合金板进行了面内单轴拉伸。加载轴被选择为沿着分布在轧制方向 (RD) 和横向 (TD) 之间的五个方向，允许以涉及滑移和孪生模式的各种活动发生。至于孪生模式，电子背散射衍射观察证实\({{\{ 10\overline{1}1\} }}\)压缩孪生对所有变形样品的塑性变形的贡献最小。相比之下，\({{\{ 10\overline{1}2\} }}\)延伸孪生（ET）不仅是维持和适应塑性应变的重要载体，而且随着塑性应变的进展，TD-分量织构的出现也有贡献。在滑移模式而言，对施密特因子分析表明，加载方向和片材的RD之间的增加的倾斜角度是不利的基础<激活一个>滑，而它有助于棱柱<激活一个>滑移。因此，这些观察结果解释了 0.2% 屈服屈服应力的增加趋势。此外，basal < a > slip 和\({{\{ 10\overline{1}2\} }}\)的激活ET 共同促成了两个倾斜的基极向法线方向的集中。随着加载方向和RD之间夹角的增加，基础< a >滑移和\({{\{ 10\overline{1}2\} }}\) ET的激活逐渐减弱。这导致两个倾斜基极集中的减弱趋势，Lankford 值（r值）的普遍增加趋势和应变硬化指数（n值）的普遍下降趋势。