ORIENTATION EFFECT ON GRAIN-GROWTH

The effect of crystal orientation of grains on grain growth is investi gated by computer simulation. A vertex model which includes the orient ation dependence of grain boundary energy is used. It is shown that th e orientation effect gives rise to more distortion and more diversity in the shape of the grains. Such a distortion in the shape of grains i s measured by the moment tensor, for a quantitative discussion. It is also found that the 1/2-power growth law of the average size of grains still holds under such an anisotropic circumstance.