Abstract: To describe the flow behaviors of semi-solid state alloy A356, two non-Newtonian constitutive equations are modeled in this paper. The CFD software PROCAST is used to simulate the process of die filling. The filling temperature is 585C (solid fraction is 0.4). Based on the results of the simulation, it is found that the material in semi-solid state exhibits an apparently higher viscosity and thus, flows much more smoothly than the Newtonian fluid. In addition, the semi-solid metal alloy has a special die filling behavior compared with liquid filling which is of great importance in improving the quality of the final components.

Keywords: FEM simulation; ProCAST software; A356 alloy.