HEAT-RESISTANT MAGNESIUM ALLOY FOR GRAVITY CASTING WITH HIGH CREEP RESISTANCE

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The present invention provides a heat-resistant magnesium alloy for gravity casting, which has excellent high-temperature resistance, tensile strength, and creep resistance properties. In preferred embodiments, the present invention provides a heat-resistant magnesium alloy for gravity casting with high creep resistance, the magnesium alloy containing magnesium as a main component, 1.00 to 3.00 wt % neodymium, 2.00 to 6.00 wt % misch metal, 0.10 to 1.00 wt % zinc, 0.10 to 1.00 wt % zirconium, 0.01 to 0.50 wt % yttrium, 0.01 to 0.10 wt % calcium, 0.008 wt % silicon, 0.004 wt % iron, 0.003 wt % copper, and 0.001 wt % nickel.