High temperature structural Mg alloys containing misch metal

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PURPOSE : Misch metal-added Mg alloy compositions for high temperature structures which inhibit deformation of a magnesium matrix at high temperature by adding misch metal with excellent heat resistance to Mg-(Al, Zn), and have superior mechanical properties by additionally adding other elements to the Mg-(Al, Zn) are provided. CONSTITUTION : A misch metal-added Mg alloy composition for high temperature structures is represented by a formula, Mg100-x-y-zAxByCz, wherein the A represents zinc(Zn) or aluminum(Al), the B is misch metal, element C is one or more elements selected from silicon(Si), boron(B), manganese(Mn), nickel(Ni), copper(Cu), tin(Sn), yttrium(Y), phosphorous(P), silver(Ag), strontium(Sr) and calcium(Ca), and the x, y and z satisfy 0 at.%%<=x<=6 at.%%, 0.8 at.%%<=y<=7 at.%% and 0 at.%%<=z<=2 at.%% respectively. © KIPO 2006