Investigation of Elastic Properties of the Single-Crystal Nickel-Base Superalloy CMSX-4 in the Temperature Interval between Room Temperature and 1300 °C
Investigation of Elastic Properties of the Single-Crystal Nickel-Base Superalloy CMSX-4 in the Temperature Interval between Room Temperature and 1300 °C
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DOI：
10.3390/cryst11020152
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发表时间：
2021-02-01
期刊：
影响因子：
2.7
通讯作者：
Svetlov, Igor
中科院分区：
文献类型：
--
作者：
Epishin, Alexander;Fedelich, Bernard;Svetlov, Igor
采用声波共振法研究了用作燃气轮机叶片材料的单晶镍基高温合金 CMSX-4 在室温至 1300 摄氏度之间的温度区间内的弹性性能。需要在如此高温下的弹性常数来模拟叶片材料在制造过程中（热等静压）以及在使用过程中可能发生的技术事故（过热）期间的机械行为。使用不同晶体取向的样本、激发各种振动模式以及通过有限元方法模拟共振频率所需的材料密度和热膨胀的精确测量，获得了高可靠性的结果。结合本工作中测量的结果和文献数据，预测了伽马相和伽马'相的弹性常数。这一预测得到了伽马'-分数的温度依赖性测量的支持。这项工作中获得的所有数据均以数值或分析形式给出，可以轻松用于不同的科学和工程计算。
The elastic properties of the single-crystal nickel-base superalloy CMSX-4 used as a blade material in gas turbines were investigated by the sonic resonance method in the temperature interval between room temperature and 1300 degrees C. Elastic constants at such high temperatures are needed to model the mechanical behavior of blade material during manufacturing (hot isostatic pressing) as well as during technical accidents which may happen in service (overheating). High reliability of the results was achieved using specimens of different crystallographic orientations, exciting various vibration modes as well as precise measurement of the material density and thermal expansion required for modeling the resonance frequencies by finite element method. Combining the results measured in this work and literature data the elastic constants of the gamma- and gamma '-phases were predicted. This prediction was supported by measurement of the temperature dependence of the gamma '-fraction. All data obtained in this work are given in numerical or analytical forms and can be easily used for different scientific and engineering calculations.