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Anomalous effect of lattice misfit on the coarsening behavior of multicomponent L12 phase
Scripta Materialia ( IF 6 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.scriptamat.2020.03.030
Feng He , Kaiwei Zhang , Guma Yeli , Yang Tong , Daixiu Wei , Junjie Li , Zhijun Wang , Jincheng Wang , Ji-jung Kai

Abstract The multicomponent L12 phase in high entropy alloys (HEAs) has shown excellent thermal stability. However, the understanding of its intrinsic origins is limited to the Lifshitz-Slyozov-Wagner (LSW) theory. In the present study, we investigate the influence of lattice misfit, which is not considered in LSW theory, on the coarsening kinetics of the multicomponent L12 phase. Different from that in most traditional alloys, the coarsening constant of multicomponent L12 particles decreases with the increasing lattice misfit in HEAs. This finding provides a new view for understanding the sluggish coarsening kinetics of L12 phase in HEAs.

中文翻译:

晶格失配对多组分 L12 相粗化行为的异常影响

摘要 高熵合金 (HEAs) 中的多组分 L12 相表现出优异的热稳定性。然而,对其内在起源的理解仅限于 Lifshitz-Slyozov-Wagner (LSW) 理论。在本研究中,我们研究了 LSW 理论中未考虑的晶格失配对多组分 L12 相粗化动力学的影响。与大多数传统合金不同,多组分 L12 颗粒的粗化常数随着 HEA 中晶格失配的增加而降低。这一发现为理解 HEA 中 L12 相的缓慢粗化动力学提供了新的视角。
更新日期:2020-07-01
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