Research of simulation dendritic growth of polycrystalline

Numerical simulation based on phase field method is developed to describe two dimensional polycrystalline solidification of pure material including four nuclei,the evolution of the interface morphology is showed and the effect of anisotropy parameter is formulated for nickel.The results indicate that,with increase in time,all of nuclei grow from independence to competition,and the growth is restrained in the range of dendritic arms.With increase in the anisotropy value,the size of every dendritic increase,the areas between dendritic arms decrease,therefore the influence between dendritic becomes stronger.The repulsive growth of dendritic arms is observed.