The process of phase formation at the initial stage of the reaction diffusion and growth of a new phase particles - at the atomic level by applying the Monte Carlo simulation of the crystalline nano-alloy was presented. The influence of initial composition on the kinetics of phase separation in a binary alloy with the fcc crystal lattice was analyzed in detail. The dependences of various parameters of tire process - the average size of new-phase particles, volume of new-phase clusters, size distribution function, dispersion and supersaturation - on time were calculated. The obtained results demonstrate the opportunity of a three-stage separation process at low initial supersaturation values and a two-stage separation at large initial supersaturation values.

3D Monte Carlo Simulation of Phase Separation Kinetics in a Binary Metallic Alloy with Vacancy Mediated Diffusion: Effect of Initial Supersaturation. A.S.Shirinyan, Y.S.Bilogorodskyy: Defect and Diffusion Forum, 2008, 277, 161-6