Computer simulation of grain growth and Ostwald ripening in alumina-zirconia two-phase composites

摘要

The kinetics of grain growth and Ostwald ripening in Al_2O_3-ZrO_2 two-phae composites was systematically in- Vestigated using two-dimensional (2-D) computer simula- Tions, based on a diffuse-interface field model. Using aver- Age values for the experimentally measured ratios of the Grain boundary energies to the intephase boundary energy As the input, the predicted 2-D microstructural features And their evolution are in excellent qualitative agreement With experimental observations on 2-D cross sections of 3-D Al_2O_3-ZrO_2 two-phase composite microstructures.