MC方法模拟晶粒长大的改进算法和晶粒数统计的研究  

Modified MC method in grain growth simulation and study on the statistics of grain number

作　　者：张根元[1] 徐迈里[1] 吴建建[1] 陈洪莲[1] 

机构地区：[1]河海大学机电工程学院,江苏常州213022

出　　处：《电焊机》2008年第1期26-28,67,共4页Electric Welding Machine

摘　　要：基于材料等温下所有晶粒长大的同步性,认为单元进行再取向尝试时采用随机提取更符合物理模型,且所有单元全部提取并完成一次再取向尝试记为一个MCS,弥补了以往模拟中采用逐一提取单元的不足。晶粒长大模拟结果符合大晶粒不断变大且有相似性,小晶粒的无规则随机变小的规律。采用了对晶粒个数、面积的精确统计算法,得出晶粒长大指数达到0.48～0.51。Based on the synchronism of all grains growth in material on isothermal condition, using random select unit is satisfactory to the physical model when the unit attempt to re-orientate,a MCS is completed when all units has been selected and complete an attempt to re-orientate ,modified the insufficiency in the former simulations which select the unit one by one.The result of grain growth simulation is satisfactory to the rule that the big grain grow unceasingly and similarity,the small grain smaller law with no rules changes.it is show that the results of grain growth exponent,n=.48 to 0.51 ,by a method for accurate calculation of grain number and size.

关 键 词：MC方法 晶粒长大模拟 随机提取 晶粒数统计 

分 类 号：TG409[金属学及工艺—焊接]