Modeling of Radiation-Induced Segregation in Fe–Cr–Ni Alloys

Abstract

In the model of radiation-induced segregation based on the first and second Fick laws and taking into account the inverse Kirkendall effect, concentration profiles of the components of the concentrated Fe‒Cr–Ni alloy and radiation point defects at various temperatures, dislocation densities, and dose gain rates were obtained. Calculation of concentration profiles was carried out from the moment of the beginning of irradiation to reaching the stationary mode. The sensitivity of the concentrations of the components of the alloy near the surface from the input parameters (migration energies of vacancies Cr, Ni, Fe, migration energy of interstitial atoms, etc.) is analyzed.