Influence of cascade-forming irradiation on the nucleation rate at the new phase precipitation in supersaturated solid solutions

Diffusion relaxation of a cascade of damages in two-component substitution alloys is considered. Due to different partial coefficients of diffusion the relaxation of nonequilibrium distributions of point defects in the cascade range is shown to result in formation of non-uniformity of alloy component distribution. Local increase of supersaturation and high diffusion mobility of atoms in the cascade range increase the probability of production of stable particles of the new phase under decomposition of substitution solid solutions. The dependence of the rate of nucleation on radiation parameters is found