单一晶粒长大过程的元胞自动机模拟

基于Moore型邻居及其相关转换准则的元胞自动机,分别对与多个晶粒相邻的单一正四边形、六边形、八边形小晶粒在晶粒长大过程中的形态变化进行模拟。结果表明：单一小晶粒形态变化规律与总体晶粒形态变化规律一致,即随着晶粒长大过程的延长,晶界边数大于6的晶粒会不断长大且边数趋于6;晶界边数小于6的晶粒则不断变小直至消失。所用模型具有较好的物理机制,可以模拟材料晶粒长大过程。

Cellular automata simulation of single grain growth

Based on the cellular automata(shortly called CA) made up of Moore neighbor type and its translation rules,the variation of shape and size of three kinds of single and smaller grains was simulated in the process of grain growth.The grains are quadrilateral,hexagonal or octagon surrounded with a few grains,respectively.The results show that the changes of grains correspond to the general law of grain growth,that is,as extending the progress of grain growth,the grain whose boundary is more than six continues to grow and its boundary number approaches six,and the grain whose boundary is less than six continues to diminish until disappear.The model used has better physical basis to suit for simulating the progress of grain growth.