——第二相粒子形狀及取向的影響
(中南大學 材料科學與工程學院, 長沙 410083)
摘 要: 采用改進的躍遷概率和Monte Carlo加速算法， 模擬了第二相粒子不同形狀及其取向對基體晶粒長大的影響。 模擬結果表明： 針狀粒子釘軋晶界的效果好于球狀粒子， 但隨著第二相面積分數(shù)/f/↓A的增加， 晶粒平均尺寸受第二相形狀的影響逐漸減小， 而晶粒形態(tài)受到的影響逐漸增強； 取向對基體晶粒長大沒有明顯影響。
關鍵字: 第二相粒子； 晶粒長大； 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
