DIE CASTING MAGNESIUM ALLOY AND MAGNESIUM DIE CASTING

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PROBLEM TO BE SOLVED : To provide a die casting magnesium alloy capable of improving the high-temperature creep characteristics without causing reduction of room temperature strength and a magnesium die casting including the same. SOLUTION : To an AZ91 alloy comprising, by weight, 6.0 to 11.0% aluminum, 0.1 to 2.5% zinc and 0.1 to 0.5% manganese, at least one kind selected from 0.1 to 2.0% silicon, 0.1 to 1.2% rare earth and 0.2 to 0.8% zirconium is added, so as to be an AZ91 based alloy, and, to the alloy, at least either 0 to 1.5% antimony or 0.2 to 3.5% calcium and 0.1 to 1.5% strontium are added, and the balance being inevitable components. The magnesium die casting is produced by the use of the alloy.