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金属学报  2008, Vol. 44 Issue (1): 13-18     
  论文 本期目录 | 过刊浏览 |
三维晶粒长大速率方程的大尺度Potts模型Monte Carlo仿真验证
王浩;刘国权;秦湘阁
北京科技大学
VERIFICATION OF THREE 3D INDIVIDUAL GRAIN GROWTH RATES WITH LARGE-SCALE MONTE CARLO SIMULATION
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北京科技大学
引用本文:

王浩; 刘国权; 秦湘阁 . 三维晶粒长大速率方程的大尺度Potts模型Monte Carlo仿真验证[J]. 金属学报, 2008, 44(1): 13-18 .

全文: PDF(246 KB)  
摘要: 采用Potts模型Monte Carlo方法对3种现存的三维个体晶粒长大速率拓扑依赖性 方程进行了仿真验证. 结果表明, Rivier速率方程认为晶粒 体积变化率dVf/dt与晶粒面数f成线性关系, 与仿真 结果明显不符, 不适用于描述三维晶粒长大过程的动力 学. 当晶粒面数f≥8时, Yu-Liu速率方程和 MacPherson-Srolovitz速率方程均与仿真结果很好吻合, 表明这两者均可以用来定量描述三维晶粒长大过程的动力学;当 f<8时, 这两个方程均与仿真结果有显著差异.
关键词 三维晶粒长大拓扑依赖性长大速率方程    
Abstract:Three existing topological dependence equations for the growth rate of three-dimensional individual grains have been testified using a new Potts model Monte Carlo simulation. The result shown that the volume change rate dVf/dt is related to the face number f by a curve, and thus, Rivier’s grain growth rate equation that predicts dVf/dt ∝f is not confirmed. Yu-Liu’s grain growth rate equation and MacPherson-Srolovitz’s grain growth rate equation are confirmed by mean of the simulation in the case of the face number f≥8. Yu-Liu’s grain growth rate equation and MacPherson-Srolovitz’s grain growth rate equation are not valid in the case of the face number f<8.
Key wordsThree–dimensional grain growth    topology-dependent grain growth rate equation    large-scale Potts Mont
收稿日期: 2007-05-28     
ZTFLH:  TG111  
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[2] 王浩; 刘国权 . 凸形多面体个体晶粒的三维von Neumann准确方程[J]. 金属学报, 2008, 44(11): 1332-1334 .
[3] 宋晓艳; 刘国权 . 第二相粒子含量对基体晶粒长大影响的计算机仿真研究[J]. 金属学报, 2000, 36(6): 592-596 .