Modelling of Equilibrium Grain Boundary Solute Segregation under Irradiation

Abstract

Abstract: Both radiation-induced excess vacancies and solute-interstitials may enhance solute diffusion. The radiation-enhanced solute diffusion promotes the kinetic process of equilibrium segregation. This effect is especially considerable in the low temperature range. As a complement to modelling of radiation-induced non-equilibrium segregation, the radiation-created vacancy and solute-interstitial-accelerated equilibrium grain boundary solute segregation were theoretically treated. The models were applied to phosphorus segregation in α-Fe subjected to neutron irradiation.

Key words: Radiation, Point defects, Diffusion, Grain boundary, Segregation

Shenhua SONG, R.G.Faulkner, P.E.J.Flewitt, Luqian WENG. Modelling of Equilibrium Grain Boundary Solute Segregation under Irradiation[J]. J Mater Sci Technol, 2005, 21(02): 196-200.

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