Abstract
Two-dimensional simulation of grain growth behavior of polycrystallne aggregates is conducted on the base of the concept proposed by the atomic jump model. The decrease of grain boundary surface energy due to the reduction of surface area becomes the driving force for the boundary migration. The moving velocity of the grain boundary is determined by the thermally activated jump of atoms. The simulation is carried out with a unit of triple point which is constructed with three straight boundaries. The direction and the velocity of the triple points are determined by using the atomic jump model. As a result, it is found that the average area of grain is linearly proportional to the time, and that the grain size distribution can be represented by the Louat function.
