| 摘要 |
An aluminum alloy comprises magnesium in a range of 3.0% by weight<=Mg<=5.5% by weight, manganese in a range of 1.5% by weight<=Mn<=2.0% by weight, nickel in a range of 0.5% by weight<=Ni<=0.9% by weight, and the balance of aluminum including inevitable impurities. Particularly, the Ni content is set in the above range in order to achieve an increase in toughness of a die-cast product. Thus, it is possible to suppress the amount of an intermetallic compound AlMnNi produced and to finely divide the intermetallic compound AlMnNi.
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