Hot shear spinning experiments with Mg–3.0Al–1.0Zn–0.5Mn (AZ31B, wt%) magnesium alloy sheets were conducted at various temperatures, spindle speeds and feed ratios to investigate the effects of these processing parameters on the microstructure, crystallographic texture and mechanical properties. The AZ31B sheet displayed good shear formability at temperatures from 473 to 673 K, spindle speeds from 300 to 600 rev/min and feed ratios from 0.1 to 0.5 mm/rev. During the dynamic recrystallization process, the grain size and texture were affected by the deformation temperature of the hot shear spinning process. Each of the spun sheets presented a strong basal texture, and the c-axis of most of the grains was parallel to the normal direction. The optimal hot shear spinning parameters were determined to be a temperature of 473 K, a spindle speed of 300 rev/min and a feed ratio of 0.1 mm/rev. The yield strength, ultimate tensile strength and elongation in the rolled direction reached 221 MPa, 288 MPa and 14.1%, and those in the transverse direction reached 205 MPa, 280 MPa and 12.4%, respectively. The improved strength and decreased mechanical anisotropy resulted from the fine grain size and strong basal texture.

中文翻译：

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Mg–3Al–Zn镁合金薄板的热剪切旋转组织和力学性能

在不同温度，纺锤速度和进料比下，用Mg-3.0Al-1.0Zn-0.5Mn（AZ31B，wt％）镁合金板进行的热剪切纺丝实验，研究了这些加工参数对显微组织，晶体织构和机械性能。AZ31B板材在473至673 K的温度，300至600转/分钟的主轴转速以及0.1至0.5 mm / rev的进料比下均显示出良好的剪切成形性。在动态再结晶过程中，热剪切纺丝过程的变形温度会影响晶粒尺寸和织构。每个纺丝床单都呈现出很强的基础纹理，而c大多数晶粒的轴平行于法线方向。确定最佳的热剪切纺丝参数为温度473 K，纺锤速度300 rev / min和进给比0.1 mm / rev。轧制方向的屈服强度，极限抗拉强度和伸长率分别为221MPa，288MPa和14.1％，横向的屈服强度，极限抗拉强度和伸长率分别为205MPa，280MPa和12.4％。细小的晶粒尺寸和强大的基体组织可以提高强度并降低机械各向异性。