In this work, extruded plates made of Mg-13.9Gd-0.45Zr (wt%) alloy, without any significant texture, were rolled at 475 °C along the extrusion direction (ED) and the extrusion transverse direction (ETD) to investigate the evolution of texture during the traditional hot rolling process. The microstructure and texture evolution during the rolling process were characterized and analyzed by electron backscattered diffraction (EBSD). The results reveal that a kind of rare earth (RE) texture that split from the normal direction (ND) towards the rolling transverse direction (RTD) can be formed by the prismatic slip at low strain. However, with the strain increasing, the RE texture gradually transforms into a basal texture since the extensive activation of basal dislocations and pyramidal <+> dislocations, especially pyramidal <+> dislocations. This transformation solely depends on the rolling reduction, which underscores the significance of strain as a pivotal factor in the texture modification.

中文翻译：

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Mg-14Gd-0.5Zr (wt%) 合金在传统热轧过程中非基底滑移引起的稀土织构演化


在这项工作中，由 Mg-13.9Gd-0.45Zr (wt%) 合金制成的挤压板没有任何明显的织构，在 475 °C 下沿挤压方向 (ED) 和挤压横向方向 (ETD) 进行轧制，以研究传统热轧过程中织构的演变。通过电子背散射衍射（EBSD）对轧制过程中的微观结构和织构演变进行了表征和分析。结果表明，低应变下的棱柱滑移可以形成一种从法线方向（ND）向轧制横向（RTD）分裂的稀土（RE）织构。然而，随着应变的增加，由于基底位错和锥体<+>位错，特别是锥体<+>位错的广泛激活，RE织构逐渐转变为基底织构。这种转变仅取决于滚动减少，这强调了应变作为织构修改中关键因素的重要性。