大尺度模拟二维晶粒长大过程的相场法研究  

Study on phase field method for large-scale simulation of two-dimensional grain growth process

作　　者：梁冬梅[1] 李洁[1] 张义灵[1] 罗志荣[1] LIANG Dongmei;LI Jie;ZHANG Yiling;LUO Zhirong(School of Physical Science and Engineering,Yulin Normal University,Yulin 537000,China)

机构地区：[1]玉林师范学院物理科学与工程技术学院,广西玉林537000

出　　处：《电焊机》2018年第11期107-111,共5页Electric Welding Machine

基　　金：国家自然科学基金(51561031);广西自然科学基金(015GXNSFBA139240);广西高校复杂系统优化与大数据处理重点实验室开放基金(2016CSO BDP0101);国家级大学生创新创业训练计划项目(201810606058)

摘　　要：采用相场法大尺度模拟二维晶粒长大过程,统计分析了晶粒半径、晶粒边数的分布特征以及晶粒半径与边数的相关性,研究了单个晶粒长大动力学和长大轨迹。结果表明,相对晶粒半径和晶粒边数分布均具有自相似性,晶粒边数与晶粒半径呈正相关;单个晶粒的长大速率和半径的关系与Hillert方程吻合较好。The two-dimensional grain growth process is simulated by phase field method.The grain radius,distribution characteristics of grain edge number,and the correlation between grain radius and edge number are analyzed statistically.The kinetics and track of individual grain growth are studied.The results show that the distributions of relative grain radius and grain edge number have selfsimilarity.There is a positive correlation between the grain edge number and grain radius.The relationship between the growth rate and radius of individual grain agrees well with Hillert equation.

关 键 词：晶粒长大 晶粒半径分布 晶粒边数分布 相场法 

分 类 号：TG401[金属学及工艺—焊接]