ABSTRACT The IrxRe1−x (0.1≤ x ≤0.7) alloys are hexagonal structured inclusion material used in an on-orbit communication satellite. The characteristic features of high-temperature alloys IrxRe1−x (0.1≤ x ≤0.7) are investigated by the theoretical evaluation of thermophysical and ultrasonic properties at room temperature. Initially, higher-order elastic constants of the alloys are calculated using the simple interaction potential model approach. With the help of this other elastic moduli, elastic stiffness constants and hardness parameters are estimated at room temperature for elastic and mechanical characterization. Later on, the ultrasonic velocity and thermal relaxation time of chosen alloys are evaluated utilizing calculated values of SOECs and lattice parameters within the same physical conditions. The orientation-dependent ultrasonic velocities and thermal relaxation time have been also evaluated for the determination of anisotropic behaviour and thermophysical properties. The obtained results are analysed to explore the inherent properties of IrxRe1−x alloys.

中文翻译：

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高温 IrxRe1−x 合金的机械和热物理性能

摘要 IrxRe1−x (0.1≤ x ≤0.7) 合金是在轨通信卫星中使用的六边形结构夹杂物材料。通过对室温下的热物理和超声性能的理论评估，研究了高温合金 IrxRe1−x (0.1≤ x ≤0.7) 的特性。最初，使用简单的相互作用势模型方法计算合金的高阶弹性常数。借助其他弹性模量，可以在室温下估计弹性刚度常数和硬度参数，以进行弹性和机械表征。随后，在相同物理条件下，利用 SOEC 和晶格参数的计算值评估所选合金的超声速度和热弛豫时间。还评估了与取向相关的超声速度和热弛豫时间，以确定各向异性行为和热物理特性。分析所得结果以探索 IrxRe1-x 合金的固有特性。