Discontinuous coarsening behavior and kinetics of L12 precipitate in high-entropy alloys

Coarsening is a metallurgical process that is related to solute transmission and system energy decrease. However, for the coarsening behavior of the L12 precipitate in high-entropy alloys, the influence of moving boundary is still an open question. Here, we found the moving boundary accelerates the...

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Bibliographic Details
Published in:Applied physics letters 2024-08, Vol.125 (6)
Main Authors: Yang, Zhongsheng, Guo, Bojing, Cui, Dingcong, Liu, Xin, Liu, Yirui, Li, Yue, Wang, Lei, Li, Junjie, Wang, Jincheng, Wang, Zhijun, He, Feng
Format: Article
Language:English
Subjects:
Diffusion rate
High entropy alloys
Kinetics
Recrystallization
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Summary:Coarsening is a metallurgical process that is related to solute transmission and system energy decrease. However, for the coarsening behavior of the L12 precipitate in high-entropy alloys, the influence of moving boundary is still an open question. Here, we found the moving boundary accelerates the discontinuous coarsening of L12 phase. The multiple defects-accelerated diffusion and continual particle-capturing ability of the moving boundary provide a high-efficiency solute transport for the fast-coarsening kinetics of L12 phase. In addition, a boundary-encountered assisted precipitate formation mechanism is also validated in the recrystallized area.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0222897