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计算扩散动力学(computational diffusion kinetics,CDK)因采用与计算热力学(computational thermodynamics,CT)或称为CALPHAD(CALculation of PHAse Diagram)技术相同的Redlich-Kister外推数学模型并与其高度集成,从而可以准确提供多元合金的扩散动力学信息,因此在合金材料的成分设计和微观组织控制中起着日益重要的作用.本文综述了计算扩散动力学在以钛及锆合金为代表的稀有金属材料研究中的最新进展,阐述了计算扩散动力学与计算热力学、定量相场(phase field)模拟以及三维统计计算(3D statistical calculation)结合用于设计(α+β)钛6-4合金热处理工艺的研究.
Computational diffusion kinetics (CDK) is highly accurate due to its highly integrated Redlich-Kister extrapolation using the same mathematical model as computational thermodynamics (CT) or the CALPHAD of PHAse Diagram Therefore, it is of great importance to the compositional design and microstructure control of alloy materials.This paper reviews the calculation of diffusion kinetics in the study of rare metals, such as titanium and zirconium alloys Recent developments are described in this paper. In addition, computational diffusion kinetics and computational thermodynamics, phase field simulation and 3D statistical calculation are combined to study the heat treatment of (α + β) Ti 6-4 alloy.