NOVEL MG-AL-TIB2-RARE EARTH ELEMENT INTERMEDIATE ALLOY AND PREPARATION METHOD THEREFOR

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A Mg-Al-TiB2-rare earth element intermediate alloy, which comprises Mg : 20-25 mass%, TiB2 : 3-5.5 mass%, a rare earth element : 0.1-0.25 mass%, and the remainder being Al and unavoidable impurities. The magnesium-aluminum intermediate alloy material allows the strength to be increased from 200-300 MPa to 330-415 MPs, and also allows the hardness and stretchability to be significantly improved. Also related is a method for use in producing the magnesium-aluminum intermediate alloy.