COMPUTER-SIMULATION OF RECRYSTALLIZATION .1. HOMOGENEOUS NUCLEATION AND GROWTH

A Monte Carlo computer simulation technique in which a continuum system is modeled employing a discrete lattice has been applied to recrystallization. Primary recrystallization is modeled under conditions where the degree of stored energy is varied and nucleation occurs homogeneously. The nucleation rate is chosen as either constant or site saturated. The recrystallized volume fraction shows sigmoidal variations with time. The data are approximately fit by the Johnson-Mehl-Avrami equation; however, deviations are observed for small and large recrystallized volume fractions. The final recrystallized grain size (area) is proportional to the nucleation rate to the ( minus 2/3 power).