Phase-field simulation of influence of anisotropy on process of non-isothermal solidification

The influence of anisotropic coefficient in the process of dendritic growth in a nickel/copper system under non-isothermal condition was studied by phase-field method.The results indicated that the velocity of dendritic growth would change faster due to bigger anisotropic coefficient,and the amount of the secondary dendrite would also become greater.The release of latent heat would result in higher temperature in solid phase than in liquid one,and the highest temperature took place in the solid/liquid interface area with fast dendritic growth.Because of the high temperature in the solid/liquid interface area,the super-cooling degree reduced,restraining the growth of dendritic and making the velocity of dendritic growth fluctuated.