A unified explanation for variation of the grain growth exponent based on grain boundary migration kinetics

被引：2
作者：
Li, Runjie [1 ]
Zhou, Jian [1 ]
Zhang, Gaofeng [1 ]
机构：
[1] Soochow Univ, Shagang Sch Iron & Steel, 8 Ji Xue Rd, Suzhou 215137, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 976卷
基金：
中国国家自然科学基金;
关键词：
Grain growth kinetics; Grain boundary migration kinetics; Nanocrystalline materials; Topological effect; Anisotropic effect; MICROSTRUCTURAL EVOLUTION; COMPUTER-SIMULATION; DYNAMICS SIMULATION; POTTS-MODEL; SOLUTE DRAG; MOTION; CURVATURE; MOBILITY; ENERGY; ALUMINUM;
D O I：
10.1016/j.jallcom.2023.173159
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Based on molecular dynamics simulation on grain boundary migration, the large grain growth exponent extensively observed in high-purity nanocrystalline materials is proved to be ascribed to specific boundary migration kinetics determined. It is also found that temperature, topology of polycrystal and grain boundary type all affect the migration kinetics, which therefore causes the exponent to vary. The findings obtained in this work are capable of rationalizing various grain growth phenomena. In addition, triple junction drag against boundary migration has been evaluated and discussed.
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页数：7
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