晶粒长大过程中1种自相似态的仿真实验验证  

Simulation Verification of Self-Similar State during Process of Normal Grain Growth

作　　者：王超[1] 刘国权[1] 

机构地区：[1]北京科技大学,北京100083

出　　处：《稀有金属材料与工程》2004年第2期128-131,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50171008)

摘　　要：采用Potts Monte Carlo方法对正常晶粒长大过程进行了仿真,并实现了晶粒的准稳态长大。仿真结果显示,准稳态晶粒长大阶段的尺寸分布不是经典Hillert理论预测的Hillert(v=4)分布,却可以用Weibull函数来描述或由v<4的解析函数来表征。其中v为晶粒尺寸分布因子。本研究的Monte Carlo仿真结果证实了v<4的准稳态晶粒尺寸分布的存在。Potts Monte Carlo simulations were performed to investigate the process of normal grain growth. The results show that the initial grain size distribution and the quasi-stationary distributions could be described well by the Weibull function or the analytical solution with nu<4, rather than the classical Hillert distribution (nu=4), where nu is a parameter of grain size distribution.

关 键 词：晶粒长大 POTTS MONTE CARLO模拟 晶粒尺寸分布 

分 类 号：O782[理学—晶体学]