Based on uniaxial tensile and compressive creeps, the mechanical properties of the third generation nickel-based single crystal superalloy were studied via the combination of nanoindentation, crystal plasticity theory, and finite element analysis. The Young’s moduli and hardness of γ , γ ′ and the topologically close-packed (TCP) phases are related to chemical composition and applied stress. The maximum values of the Von Mises equivalent stress and damage are at the tip of the TCP phase. These values are inversely proportional to the distance to the TCP phase. Furthermore, the rafting of the γ ′ phase can be predicted according to the distribution of the TCP phase and stress.

中文翻译：

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镍基单晶高温合金的纳米压痕研究与力学性能分析

基于单轴拉伸和压缩蠕变，通过纳米压痕，晶体塑性理论和有限元分析相结合，研究了第三代镍基单晶高温合金的力学性能。γ，γ'的杨氏模量和硬度以及拓扑紧密堆积（TCP）相与化学成分和施加的应力有关。冯·米塞斯等效应力和破坏的最大值在TCP阶段的顶端。这些值与到TCP阶段的距离成反比。此外，可以根据TCP相的分布和应力来预测γ′相的漂流。