Al-25%Siの薄肉ダイカストにおけるSiの分布

抄録

This study investigates the distribution of silicon on thin-walled die casting made of Al-25%Si alloy. The fluidity test piece with a thickness of 0.8mm was used, and the model of the heat sink was made of Al-25%Si alloy with a fin height of 35mm and a fin thickness of 0.5mm. The effect of the distribution of silicon on heat radiation performance was estimated. The obtained results are summarized as follows: (1) The distribution of silicon varies between the gate to the flow tip in the fluidity test piece made of Al-25%Si. (2) The volume of silicon at the gate side is not the same as that of silicon at the opposite side on the surface of the fin in the model of the heat sink made of Al-25%Si alloy. (3) The distribution of silicon has no influence on heat radiation performance in the model of the heat sink made of Al-25%Si alloy.