Patent ID: 8303736
Filing Date: 2012-11-06
Classification: B21B,B22D,C22C,C22F

Abstract:
1. A casted aluminum alloy consisting essentially of: 0.8 to 5 mass % of Fe as a first component element, 0.15 to 1 mass % of Ti as a second component element, one or more kinds of third component elements selected from the group consisting of 0.05 to 2 mass % of Zr, 0.2 to 0.5 mass % of Nb, 0.2 to 0.5 mass % of Hf, 0.2 mass % of Sc, and 0.2 mass % of Y and in an amount that satisfies Fe>X>Ti when the content of the first component element Fe is Fe (mass %), the content of the second component element Ti is Ti (mass %), and a total content of the third component elements is X (mass %), optionally Mg, optionally at least one fifth component element selected from the group consisting of Cu, Cr and Co, optionally one or more of V and Mo, and a residual part comprising Al and inevitable impurities, wherein the casted aluminum alloy has a metal structure comprising an α phase that is formed of an Al matrix and a layered phase that is formed of an eutectic structure of the Al matrix and an Al—Fe compound in such a manner as to surround the α phase; the Al matrix is formed of a supersaturated solid solution of Al in which the second component element and the third component element are dissolved; and an area ratio of a crystallizate formed of an intermetallic compound of Al, the second component element, and the third component element and having a particle diameter of 5 μm or more is less than 5% in an arbitrary section of the casted aluminum alloy, wherein the casted aluminum alloy has softening resistance of one of (i) HVR