Vacancy-Solute Atom Complexes Diffusion and Non-Equilibrium Segregation in Alloy Steels
QIAN Yun-peng
HE Qing-fu
YAN Guo-chen
GAO Yi-gang
Abstract：Diffusion in solides has been interpreted by mature theory of Equilibrium Segregation which is based on single atom diffusion. Non-Equilibrium Segregation takes place with the vacancies annihilating in grain boundaries. Equilibrium Segregation and Non-Equilibrium Segregation can coexist at grain boundaries, and there is a segregation transition tempreture. Above the tempreture, Non-Euilibrium Segregation plays the predominant role and below the tempreture Equilibrium Segregation plays the predominant role. On the base of vacancy-solute atom complexes diffusion, Non-Equilibrium Segregation can be satisfactorily interpreted.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 84-87 )