——第二相粒子形状及取向的影响
(中南大学 材料科学与工程学院, 长沙 410083)
摘 要: 采用改进的跃迁概率和Monte Carlo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/f/↓A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。
关键字: 第二相粒子； 晶粒长大； Monte Carlo方法
（School of Materials Science and Engineering,
Central South University, Changsha 410083, China）
Abstract: 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 fA, 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.
Key words: second-phase particle; grain growth; Monte Carlo method
