Abstract The elastic properties of Cu − Al − Mn alloys with compositions along the Cu3Al → Cu2AlMn line and bcc-based structures, are studied by means of first-principles calculations. From the calculated elastic constants, the Zener’s anisotropy, sound velocities and Debye temperature are determined. The theoretical results compare well with the available experimental data. The influence of vibrations is introduced through the quasi-harmonic Debye model, and different properties are studied as functions of temperature and composition.

中文翻译：

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β - Cu - Al - Mn 合金沿 Cu3Al → Cu2AlMn 组成线的机械和热力学性能

摘要 通过第一性原理计算研究了成分沿Cu3Al → Cu2AlMn 线和bcc 基结构的Cu - Al - Mn 合金的弹性性能。根据计算出的弹性常数，可以确定齐纳的各向异性、声速和德拜温度。理论结果与可用的实验数据相比很好。通过准谐波德拜模型引入了振动的影响，并研究了作为温度和成分的函数的不同特性。