Abstract

Strain distribution in plane-strained (rolling) and simple-sheared (torsion) Al–Mg alloy has been estimated using both X-ray line profile analysis and electron backscatter technique. The strain analyses under unified texture distribution by orientation rotation showed that torsion has relatively homogeneous strain distribution regardless of texture component in contrast to inhomogeneous strain in rolling. In addition, annealing texture of torsion has more random texture than inhomogeneous rolling texture. Lower texture difference index in annealed torsion specimens suggest homogeneous strain distribution in simple shear has a higher resistance to strain-induced boundary migration, which has been known to be main reason for strong development of ND||〈100〉 component during annealing of rolled Al sheet.

Graphic abstract

摘要

平面应变（轧制）和简单剪切（扭转）Al-Mg合金中的应变分布已使用X射线线轮廓分析和电子反向散射技术进行了估算。通过取向旋转在统一的纹理分布下进行的应变分析表明，与轧制中的不均匀应变相比，扭转具有相对均匀的应变分布，而与纹理分量无关。另外，扭转退火纹理比非均匀滚动纹理具有更多的随机纹理。退火扭转试样中较低的织构差异指数表明简单剪切中的均匀应变分布具有较高的抵抗应变诱发的边界迁移的能力，这被认为是轧制Al退火过程中ND || <100>组分强烈发展的主要原因片。

图形摘要