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Phase field models have been known as one of the most adequate deterministic models for directly simulating the dendrite growth morphology, nevertheless, it was not clear how the grain morphologies were influenced by the constant parameters in the models. In this paper, it was studied quantitatively that the connection between the growth morphologies and some parameters including undercooling, the coupling coefficient between the temperature field and the phase field, the anisotropic coefficient and so on. The formation and transformation between the dendrite morphology and seaweed morphology were discussed. Besides, the relations between the tip growth speed and the parameters were studied, the theory of the growth tip branching-off and the theory of side-branching were analyzed.

The Effects of Phase-Field Parameters on Grain Growth Morphologies in the Solidification