Evolution of 2D Potts Model Grain Microstructures from an Initial Hillert Size Distribution

摘要

Grain growth experiments and simulations exhibit self-similar grain size Hillert ( 1). To test whether this discrepancy is due to insufficient anneal times, two different two-dimensional grain structures with realistic topologies and Hillert grain size distributions are generated and subjected to grain growth via the Monte Carlo Potts Model (MCPM). In both cases, the observed self- similar grain size distributions deviate from the initial Hillert form and conform instead to that observed in MCPM grain growth simulations that start from a random microstructure. This suggests that the Hillert grain size distribution is not an attractor.