MONTE-CARLO STUDY OF THE EVOLUTION OF DIFFUSE-SCATTERING AND COHERENTMODULATION DURING HCP TO FCC MARTENSITIC TRANSITION .2. DOMAIN GROWTH-KINETICS BY SPINODAL PROCESS

Monte Carlo techniques are employed to study the kinetics of h.c.p. (2 H) to f.c.c. (3C) martensitic transition by spin flip dynamics using a 1-D (one-dimensional) Ising model. The characteristic length scale is shown to exhibit t(0.5) dependence as confirmed by direct domain coun ting as well as dynamical scaling of the pair correlation functions. T he diffuse scattering at]ate stages can be predicted using a scaling f unction for the pair correlations. The predicted evolution of the diff use scattering pattern for the spinodal regime is in qualitative agree ment with the experimentally observed patterns for ZnS single crystals . Copyright (C) 1996 Acta Metallurgica Inc.