论文信息 - A Kinetic Model of Precipitate Evolution

A Kinetic Model of Precipitate Evolution

Chemical reaction rate theory is used to model the kinetics of precipitation reactions in Al alloys, including the effects of continuous cooling and thermally generated point defects. The computational method models the processes of nucleation, growth, and coarsening within a single framework. Calculated time and temperature dependent precipitate number densities and sizes during the homogeneous precipitation of the Al{sub 3}Sc phase in an Al-.11 at% Sc alloy are shown to compare favorably with experimental observations.

[1] R. Wagner,et al. A Combined Cluster‐Dynamic and Deterministic Description of Decomposition Kinetics in Binary Alloys with a Tendency for Clustering , 1992 .

[2] J. Feder,et al. Homogeneous nucleation and growth of droplets in vapours , 1966 .

[3] R. Hyland. Homogeneous nucleation kinetics of Al3Sc in a dilute Al-Sc alloy , 1992 .

[4] C. P. Flynn,et al. Point Defects and Diffusion , 1973 .

[5] H. Aaronson,et al. Lectures on the theory of phase transformations , 1975 .

[6] Kenneth F. Kelton,et al. Transient nucleation in condensed systems , 1983 .

[7] R. Balluffi. Vacancy defect mobilities and binding energies obtained from annealing studies , 1976 .

[8] J. Hoyt,et al. Aspects of the Shi–Seinfeld–Okuyama theory of transient nucleation , 1995 .

[9] J. A. Venables,et al. Rate equation approaches to thin film nucleation kinetics , 1973 .