Binary and ternary Mg-1%Er/Mg-1%Er-1%Zn alloys were rolled and subsequently subjected to various heat treatments to study texture selection during recrystallization and following grain growth. The results revealed favorable texture alterations in both alloys and the formation of a unique ±40° transvers direction (TD) recrystallization texture in the ternary alloy. While the binary alloy underwent a continuous alteration of its texture and grain size throughout recrystallization and grain growth, the ternary alloy showed a rapid rolling (RD) to transvers direction (TD) texture transition occurring during early stages of recrystallization. Targeted electron back scatter diffraction (EBSD) analysis of the recrystallized fraction unraveled a selective growth behavior of recrystallization nuclei with TD tilted orientations that is likely attributed to solute drag effect on the mobility of specific grain boundaries. Mg-1%Er-1%Zn additionally exhibited a stunning microstructural stability during grain growth annealing. This was attributed to a fine dispersion of dense nanosized particles in the matrix that impeded grain growth by Zener drag. The mechanical properties of both alloys were determined by uniaxial tensile tests combined with EBSD assisted slip trace analysis at 5% tensile strain to investigate non-basal slip behavior. Owing to synergic alloying effects on solid solution strengthening and slip activation, as well as precipitation hardening, the ternary Mg-1%Er-1%Zn alloy demonstrated a remarkable enhancement in the yield strength, strain hardening capability, and failure ductility, compared with the Mg-1%Er alloy.

中文翻译：

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镁-rb-锌合金重结晶和晶粒长大过程中的组织选择机理

轧制二元和三元Mg-1％Er / Mg-1％Er-1％Zn合金，然后对其进行各种热处理，以研究重结晶过程中和晶粒生长后的织构选择。结果表明两种合金均具有良好的织构变化，并且在三元合金中形成独特的±40°横向（TD）再结晶织构。尽管二元合金在整个重结晶和晶粒生长过程中其组织和晶粒尺寸连续变化，但三元合金在重结晶的早期阶段显示出快速的轧制（RD）向横向（TD）的织构转变。对重结晶部分的定向电子背散射衍射（EBSD）分析揭示了具有TD倾斜取向的重结晶核的选择性生长行为，这很可能归因于溶质对特定晶界迁移率的拖曳效应。Mg-1％Er-1％Zn在晶粒生长退火过程中还表现出惊人的微观结构稳定性。这归因于致密纳米尺寸颗粒在基体中的良好分散，阻碍了齐纳阻力的晶粒生长。两种合金的机械性能是通过单轴拉伸试验结合EBSD辅助滑移痕迹分析在5％拉伸应变下确定的，以研究非基础滑移行为。由于协同合金化对固溶体的强化和滑爽活化以及沉淀硬化的影响，