Rolled pure Mg and Mg-1 wt% Gd alloy were subjected to room temperature in-plane compression along the rolling direction, followed by isochronal annealing treatments for 1 h. The results of deformation texture and microstructure showed substantial differences due to rare earth alloying. In spite of imposed c-axis extension during deformation, the Mg-1Gd alloy retained the initial texture with the majority of basal poles concentrated near the longitudinal direction of the used channel-die tool. Electron back scatter diffraction analysis of the deformation microstructure revealed a predominance of {$10\bar{1}1$} compression and {$10\bar{1}1$}-{$10\bar{1}2$} double twins relative to coexisting {$10\bar{1}2$} tension twins. This behavior was significantly contrasting in comparison with that of pure Mg, wherein first and second generation {$10\bar{1}2$} tension twins were observed in profuse quantities. Continuous dynamic recrystallization took place inside compression and double twins by means of slip assisted subgrain rotation about the [0001] axis giving rise to a sharp prismatic fiber of recrystallized orientations. This fiber was transformed into a randomized texture pattern during subsequent static recrystallization and grain growth due to a different discontinuous recrystallization mechanism. This resulted in a significant annealing texture weakening and an increase of the overall Schmid factor for basal slip.

将轧制的纯Mg和Mg-1 wt％的Gd合金沿轧制方向进行室温的平面内压缩，然后进行等时退火处理1 h。由于稀土合金化，变形织构和微观结构的结果显示出实质性的差异。尽管在变形过程中强加了c轴延伸，Mg-1Gd合金仍保留了初始织构，且大部分基极集中在所用槽模模具的纵向附近。变形微观结构的电子背散射衍射分析表明，{$10\overline{\mathrm{1个}}\mathrm{1个}$}压缩和{$10\overline{\mathrm{1个}}\mathrm{1个}$}-{$10\overline{\mathrm{1个}}\mathrm{2个}$}与双胞胎并存的双胞胎{$10\overline{\mathrm{1个}}\mathrm{2个}$双胞胎。与纯镁相比，第一和第二代{$10\overline{\mathrm{1个}}\mathrm{2个}$tension观察到双胞胎的数量很多。压缩过程中发生连续的动态再结晶，并通过绕着[0001]轴的滑动辅助亚晶粒旋转产生双晶，从而产生了具有清晰结晶取向的棱柱状纤维。由于不同的不连续再结晶机理，该纤维在随后的静态再结晶和晶粒生长过程中转变为随机的织构图案。这导致显着的退火织构减弱，并增加了基层滑移的总体施密特因子。