【摘要】 介绍了一种先进的三元合金沉淀动力学模型 ,该模型基于微观扩散方程建立 ,在倒易空间中求解问题。无须预先设定新相结构和沉淀类型 ,可基于原子层面模拟有序化 ,成分簇聚等过程 ;可同时获得多相结构各自的演化信息 ;既可描述形核长大机制 ,又可描述失稳分解机制 ;自动将粗化作为伴随过程处理。利用该模型已对实际三元合金的沉淀动力学成功地进行了模拟研究更多还原

【Abstract】 In this paper, an advanced kinetic model of ternary alloys was introduced, which was based on microscopic diffusion equations solved in the reciprocal space Be means of the model,any priori assumptions concerning phase structures and precipitation mechanisms were unnecessary; ordering reactions and composition clustering can all be simulated within atomic scale,and multiphase structure evolution informations can be obtained simultaneously;both nucleation and spinodal decomposition mechanisms can be described; coarsening was treated as a accompanying process automatically Using this model, simulation investigations have been carried out for the phase transition kinetics of several ternary alloys更多还原