Abstract

The edge samples of AZ31 magnesium alloy plate after hot rolling and annealing were compressed along the rolling direction (RD) under different deformation conditions. Then, the optimal conditions for the generation of {10–12} extension twins and the microtexture evolution of edge samples were studied by using EBSD. The results show that the texture strength of the hot-rolled AZ31 magnesium alloy plate was significantly greater than that of the middle part. When the compressive strain along the RD was small at the edge of the rolled piece at room temperature, a large number of extension twin layers were generated. Grain matrix and twins coexisted. As the strain increased to 8.19%, the grains completely transformed into extension twins. Along with the generation of extension twins, hard-oriented grains were consumed in large quantities and the weakening effect of the basal texture was proportional to the volume fraction of the extension twins, while at high temperature (250 °C), the slip dominated the plastic deformation process.

Graphic Abstract

中文翻译：

---

AZ31镁合金板边缘{10-12}延伸孪晶的制备及效果分析

摘要

AZ31镁合金板热轧退火后的边缘试样在不同变形条件下沿轧制方向（RD）进行压缩。然后，利用EBSD研究了生成{10-12}拉伸孪晶的最佳条件和边缘样品的微观纹理演化。结果表明，热轧AZ31镁合金板的织构强度明显大于中部。当室温下轧件边缘沿RD方向的压缩应变较小时，会产生大量的拉伸孪晶层。晶粒矩阵和孪晶共存。随着应变增加到 8.19%，晶粒完全转变为拉伸孪晶。随着延伸双胞胎的产生，

图形摘要