正常晶粒长大的计算机模拟(Ⅱ)——第二相粒子形状及取向的影响  

Computer simulation of grain growth(Ⅱ)——influence of shape and orientation of second-phase particles on grain growth

作　　者：刘祖耀[1] 郑子樵[1] 陈大钦[1] 李世晨[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083

出　　处：《中国有色金属学报》2004年第1期122-126,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(59971066);高校博士点基金资助项目(2000053301)

摘　　要：采用改进的跃迁概率和MonteCarlo加速算法,模拟了第二相粒子不同形状及其取向对基体晶粒长大的影响。模拟结果表明:针状粒子钉轧晶界的效果好于球状粒子,但随着第二相面积分数fA的增加,晶粒平均尺寸受第二相形状的影响逐渐减小,而晶粒形态受到的影响逐渐增强;取向对基体晶粒长大没有明显影响。A modified Monte Carlo Method was applied to simulate the grain growth process with different shapes and orientations of particles. The results suggest that the figure and the mean size of grain are effected by different shape particles. With the increment of f_A, the particles' shape effect decreases, at the same time, the orientational effect enhances. And the orientations of particles have no distinct influence on the grain figure and mean size.

关 键 词：晶粒长大 计算机模拟 第二相粒子 跃迁概率 MonteCarlo加速算法 多相合金 

分 类 号：TG111.7[金属学及工艺—物理冶金] TP391.9[金属学及工艺—金属学]