Kinetics of martensitic type restacking transitions: dynamic scaling, universal growth exponent and evolution of diffuse scattering

Abstract

Results of Monte Carlo simulations of the kinetics of 2H to 3C, 3C to 2H, 2H to 4H and 2H to 6H restacking transitions by a martensitic process using a one–dimensional kinetic Ising model are presented. It is shown that the evolution of diffuse scattering during these transitions can be calculated by using such a model. We show that the characteristic length scale L(t) grows as t {1/2} in the late stages while the equal-time two-point correlation functions exhibit dynamic scaling. A simple diffuse scattering experiment is proposed to determine L(t) from single–crystal diffraction data for verifying the power law dependence of L(t) at the late stages of the restacking transitions.