Phase-field Simulation of Dendrite Growth on Fe-C Alloy

The evolutions of dendrite growth during isothermal solidification of Fe-0.5%C alloy are simulated using phase field method.The effects of anisotropy modulus,anisotropy strength and supercooling on the dendrite growth are studied.The results illustrate that the morphology of dendrite have four-fold and six-fold symmetry while the crystal along with 〈100〉and〈110〉directions in two dimensions,respectively.With the increasing of anisotropy strength,the velocity of dendrite growth was increased,the crystal morphology changes from quasi-spherical to dendrite;With the increasing of supercooling,the velocity of dendrite growth was increased and the thickness of solute diffusion layer was decreased,the dendrites become coarse.