应力场对相分解过程影响的计算机模拟研究(I)——模型描述及对称成分下的相分离模拟  

Effect of Stress Field on Phase Separation Process by Computer Simulation (I): Model Description and Simulation of Symmetrical Composition Phase Separation Process

作　　者：陈大钦[1] 李世晨[1] 郑子樵[1] 刘祖耀[1] 李剑[1] 

机构地区：[1]中南大学,湖南长沙410083

出　　处：《稀有金属材料与工程》2005年第8期1200-1204,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(50271084)

摘　　要：将扩散界面场模型与Khachaturyan弹性应变能计算模型相耦合,对对称成分点调幅分解过程中应力场(包括外场)对析出相的形态及动力学过程的影响进行模拟研究。模拟结果表明:对于非均匀弹性模量系统在外加应力场作用下,沉淀相的析出过程发生重大的变化,粒子沿弹性软方向呈各向异性析出。In this paper, Diffuse-interface field model and Khachaturyan elastic strain energy model are coupled to investigate the morphologyical evolutions and kinetics process controlled by transformation-induced elastic strain （include external strain field） during spinodal decomposition in a symmetrical composition case. The simulation results indicate that precipitates are preferentially oriented along elalstic soft directions with an external stress for an inhomogeneous elastic modulus system.

关 键 词：扩散界面场模型 弹性应变能 调幅分解 计算机模拟 应力位向效应 

分 类 号：O414.13[理学—理论物理]