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Crystal Process of Liquidus Casting Aluminium Alloy A356

LU Gui-min

Abstract

Fine equiaxed nondendritic grains of primary microstructure needed by semi-solid forming were obtained by means of liquidus casting of alloy A356,i.e.cast from its liquidus temperature nearby.The influence of casting temperature,keeping temperature time liquidus casting microstructure was investigated.The results show that the optimum holding temperature is605℃with the affect of the super -cooling anddiffuseness.The longer holding time will benefit nucleation in1hour.

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Key concepts: Liquidus, Equiaxed crystals, Nucleation, Metallurgy, Microstructure, Materials science, Casting, Alloy