中文摘要：

基于CALPHAD热力学数据,采用KKS相场模型模拟了Ni-Al高温合金γ＇相的三维析出行为。结果表明,γ＇相粗化行为符合LSW理论结果,粗化动力学指数为3,粗化速率常数K=23.4 nm~3/h,γ＇相的体积分数为32%。弹性畸变能和有序畴的作用导致了γ＇相颗粒的条状形貌和规则排列。

英文摘要：

Based on the CALPHAD thermodynamics data,the KKS phase-field model was used to simulate the 3 D separation behavior of γ＇ phase in Ni-Al superalloy. The results showed that coarsening behavior of γ＇ phase showed good agreement with the LSW theory result. The coarsening kinetic index was 3,the coarsening rate constant K was 23. 4 nm~3/h,and the volume fraction of γ＇phase was 32%. The function of elastic energy and ordered domains resulted in the bar shape and regular array of γ＇ precipitates.