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Combining with CAFE model, this paper introduced a modified heat transfer model which interfere the effect of mechanical vibration based on turbulent heat transfer theory, on this basis the grains morphology of alloys under micro-amplitude vibration can be analyzed. Based on this model, the results of ZL201 alloys showed that vibration can promote columnar-to-equiaxed transition (CET) and grain refinement, and improve homogeneity of grains distribution. The optimum vibration frequency in current study is 40Hz. The method used in this paper provides a reference for study on the theory of vibration casting and is beneficial for parameters optimization of mechanical vibration in foundry field.

Numerical study on effect of micro-amplitude vibration on the grains morphology of alloys