Grain boundary curvature based 2D cellular automata simulation of grain coarsening

被引：23
作者：
Li, Zhiqiang [1 ]
Wang, Junsheng [1 ,2 ]
Huang, Houbing [1 ,2 ]
机构：
[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
[2] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 791卷
基金：
中国博士后科学基金;
关键词：
Grain boundary curvature; Cellular automata model; Grain coarsening; Grain growth kinetics; Grain topology; PHASE-FIELD; COMPUTER-SIMULATION; MONTE-CARLO; MICROSTRUCTURE EVOLUTION; SIZE DISTRIBUTIONS; GROWTH KINETICS; ENERGY; MODEL; DIMENSIONS; ANISOTROPY;
D O I：
10.1016/j.jallcom.2019.03.195
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：
2D grain coarsening CA models based on the grain boundary curvature models of Kremeyer and Mason were established. The parameters needed in the two models were obtained via different methods. Then, the grain growth kinetics, grain size distribution, topological aspects and individual grain growth kinetics were deeply studied with these two curvature based CA models. The grain growth exponents of both models were close to 2 which was a constant derived from theory and verified experimentally. The Weibull function has a better fitting for the simulation results than the other analytical distributions proposed by Hillert and Rios. The topological aspect of both models was analyzed with the Aboav-Weaire relation. Excellent agreements between the simulation results and the Aboav-Weaire relation were obtained. At last, a new relationship was proposed to calculate the growth rate of individual grains. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：411 / 422
页数：12
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