——晶粒長(zhǎng)大動(dòng)力學(xué)躍遷概率的改進(jìn)
(中南大學(xué) 材料科學(xué)與工程學(xué)院 , 長(zhǎng)沙 410083)
摘 要: 根據(jù)晶粒長(zhǎng)大真實(shí)的物理過(guò)程提出了構(gòu)建躍遷概率所必須滿足的條件。 在此基礎(chǔ)上提出了正確考慮溫度影響的躍遷概率， 并采用該概率對(duì)晶粒長(zhǎng)大過(guò)程中溫度和第二相粒子含量的作用進(jìn)行了模擬。 模擬結(jié)果可以更真實(shí)地反映晶粒長(zhǎng)大的物理過(guò)程， 又能與已有的計(jì)算數(shù)據(jù)相容， 表現(xiàn)出較傳統(tǒng)概率更好的優(yōu)越性。
關(guān)鍵字: 躍遷概率； 晶粒長(zhǎng)大； Monte Carlo方法
—Modified transition probability
（College of Materials Science and Engineering,
Central South University, Changsha 410083, China）
Abstract:A series of principles on transition probability was supplied for real grain growth. And in accord with these principles, a modified transition probability considering the influence of temperature was put forward to simulate the grain growth relying on temperature and second phase particles. The results successfully agree with the real physical grain growth and coincide with the original data. It is suggested that the modified transition probability is better than the traditional one.
Key words: transition probability; grain growth; Monte Carlo method
