Abstract The performance of elevated temperature compressive deformation of the beryllium-aluminum casting alloy was investigated in the temperature range of 450–660 °C and strain rate 0.1–50 s−1. The temperature mainly affects the load bearing ability and flowability of aluminum and thus the compatible plastic deformation of the alloy, while the strain rate mainly affects the work hardening effect and peak stresses. The deformation mechanism was discussed by combining analysis of the stress-strain curves and microstructures. The constitutive equation relating flow stress, strain rate, and deformation temperature of the alloy is established.

中文翻译：

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铍铝合金的高温压缩行为

摘要 研究了铍铝铸造合金在 450-660 °C 温度范围和 0.1-50 s-1 应变速率下的高温压缩变形性能。温度主要影响铝的承载能力和流动性，从而影响合金的相容塑性变形，而应变速率主要影响加工硬化效果和峰值应力。结合应力-应变曲线和显微组织分析，讨论了变形机理。建立了合金的流动应力、应变速率和变形温度的本构方程。