Abstract

The structure and properties of the Al–4.5Mg–0.15Zr compositions additionally alloyed with Er, Y, and Yb are studied. During low-temperature annealing of the alloys, the precipitates of 3–5 nm in size with the L1₂ structure are formed. The recrystallization of cold-rolled sheets of the studied alloys starts at a temperature of ~300°С, when the hardness substantially decreases as compared to that of the rolled alloys, and the structure is almost completely recrystallized. During heating to 550°С, the stable recrystallized structure with a grain size of 11–13 µm remains in the alloys with Er and Yb, whereas, in the alloy with Y, the coarse-grained structure with an average grain size of 40 ± 7 µm is formed.

中文翻译：

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与 Er、Y 和 Yb 合金化的 Al-4.5Mg-0.15Zr 组合物的结构和性能

摘要

研究了另外与 Er、Y 和 Yb 合金化的 Al-4.5Mg-0.15Zr 组合物的结构和性能。在合金的低温退火过程中，形成了尺寸为3-5nm的L 1 ₂结构的析出物。所研究合金的冷轧板的再结晶开始于约 300°С 的温度，此时硬度与轧制合金相比显着降低，并且结构几乎完全再结晶。在加热到 550°С 期间，具有 11-13 µm 晶粒尺寸的稳定再结晶组织保留在含 Er 和 Yb 的合金中，而在含 Y 的合金中，平均晶粒尺寸为 40 ±形成 7 µm。