SOLUTE SEGREGATION IN DILUTE BCC ALLOYS UNDER IRRADIATION

Computer models for the prediction of solute segregation in alloys und er irradiation require expressions for the diffusion coefficients whic h appear in the generalized Fick equations used in these models. These expressions are obtained by analyses of atomic transport caused by th e movement of vacancies and interstitials generated by the radiation. The present paper provides expressions for the required diffusion coef ficients (ten in number) in terms of the properties of atomic models w hich an appropriate for many bce transition metals including alpha-Fe.