Patent ID: 9657372
Date: 2017-05-23
CPC Classifications: B22D,C22C,C22F

Claim:
1. A manufacturing method of an aluminum alloy in which an Al—Fe—Si compound is refined, comprising adding, to a molten aluminum alloy comprising 8 to 20% by mass of Si; 0.5 to 4% by mass of Fe; with the balance being Al and impurities, AlB 2 , which is present as a solid phase in the molten metal upon crystallization of the Al—Fe—Si compound, in an amount of 0.02 to 1.2% by mass with respect to the entire molten aluminum alloy so that B is in a range of 0.01 to 0.5% by mass with respect to the entire molten aluminum alloy, wherein the AlB 7 is contained in an Al—B alloy, and the Al—B alloy is added to the molten aluminum alloy.