The Mg–Gd–Y–Zn–Zr alloy sheets with different texture characteristics and distribution of the interdendritic long period-stacking ordered (LPSO) phases were fabricated through altering the final rolling reduction (FRR). The results showed that the texture characteristic was closely related to FRR and affected the tensile properties of the resulted sheets to some extent. The Schmid factor (SF) of the basal \(\left\langle a \right\rangle\) slip improved with further FRR, which was ascribed to that the dynamic recrystallization (DRX) grains expand into the deformed grains with basal texture. However, the improvement of the tensile yield strength (TYS) with further FRR indicates that the strengthening effect from DRX grains surpasses the weakening effect from the elevated SF. The formation of the line-distributed interdendritic 14H-LPSO phases can also affect the tensile properties of the resulted sheets. The line-distributed interdendritic 14H-LPSO phases along rolling direction (RD) can act as reinforcing fiber and contribute to the higher TYS along RD and 45° to some extent, which resulted in the higher TYS along 45° compared with that along transverse direction (TD) for each resulted sheet under the circumstance of approximate basal \(\left\langle a \right\rangle\) and pyramid \(\left\langle {c + a} \right\rangle\) friction stress. Thus, the tensile yield strength is not only related to the texture, but also depends on the grain size and line-distributed interdendritic LPSO phases. The micro-cracks spread perpendicular to the tension direction, and thus, the larger cracks form within the line-distributed 14H-LPSO phases during tension along TD, which accounts for the lower fracture elongation along TD.

通过改变最终压下率（FRR），制备了具有不同织构特征和枝晶间长堆积顺序（LPSO）相分布的Mg-Gd-Y-Zn-Zr合金板。结果表明，织构特性与FRR密切相关，并在一定程度上影响所得板材的拉伸性能。基础\（\ left \ langle a \ right \ rangle \）的Schmid因子（SF ）进一步的FRR改善了滑移率，这归因于动态再结晶（DRX）晶粒扩展为具有基本织构的变形晶粒。但是，随着FRR的增加，抗拉屈服强度（TYS）的提高表明，DRX晶粒的增强作用超过了SF升高的弱化作用。线分布的树枝状14H-LPSO相的形成也会影响所得板材的拉伸性能。沿轧制方向（RD）的线状分布的树枝状14H-LPSO相可以充当增强纤维，并在一定程度上有助于沿RD和45°的较高TYS，这导致与横向相比，沿45°的TYS较高（TD）在近似基础情况下的每个结果表\（\ left \ langle a \ right \ rangle \）和金字塔\（\ left \ langle {c + a} \ right \ rangle \）摩擦应力。因此，拉伸屈服强度不仅与织构有关，而且还取决于晶粒尺寸和线分布的枝晶间LPSO相。微裂纹垂直于拉伸方向扩展，因此，在沿TD拉伸期间，线分布的14H-LPSO相内会形成较大的裂纹，这说明沿TD的断裂伸长率较低。