ALUMINUM ALLOY AND METHOD FOR MANUFACTURING ALUMINUM ALLOY

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PROBLEM TO BE SOLVED : To provide an aluminum alloy excellent in creep resistance and fatigue strength in a high temperature. SOLUTION : The aluminum alloy contains Si, Fe, Ni, Zr and MM as an additive element and the remainder consisting of Al and inevitable impurities. When a composition ratio Si : Fe : Ni : Zr : MM=α : β : γ : δ : ε in the mass% of each additive element has α=1, the aluminum alloy satisfies 0.185≤β≤0.235, 0.145≤γ≤0.184, 0.110≤δ≤0.140 and 0.370≤ε≤0.470, where MM is a misch metal. COPYRIGHT : (C)2015, JPO&INPIT