COMPUTER-SIMULATION OF ANISOTROPIC GRAIN-GROWTH

The process of anisotropic grain growth driven by anisotropic grain bo undary energies is investigated by Monte Carlo simulations. A new mode l is developed for describing the anisotropy of grain boundary energie s. This model divides the microstructure into minimum elements which a re labeled by different orientation numbers. The surfaces of each mini mum element are associated with surface energies for a given orientati on and are determined from a Wulff plot. The grain boundary energy is then calculated from the energies of the two surfaces meeting at the b oundary and the binding energy of the grain boundary. The possibility of anisotropic grain growth is explored for different shapes of Wulff plot.