EFFECTS OF YTTRIUM AND MISCHMETAL ON THE STRUCTURES AND IMPACT TOUGHNESS OF Mg-Y AND Mg-RE ALLOYS

Abstract

Abstract: The impact toughnesses of Mg-Y and Mg-RE alloys with various compositions of yttrium and mischmetal are tested respectively. The constituents of the phases in the investigated alloys are examined by EDX analysis with microprobees. The microhardnesses of the phases are analysed with microhardness tester. The experimental results show that the maximum impact toughness of Mg-Y alloy is higher than that of Mg-RE alloy and there are more dissolved yttrium in the matrix of Mg-Y alloy than dissolved RE in that of Mg-RE alloy. The microhardness of matrix in Mg-Y alloy is much higher than in Mg-RE alloy.

Key words: Impact toughness, Magnesium alloy, Structures, Yttrium and mischmetal

CLC Number:

TG146

Zhang Shichang;Wei Bokang;Cai Qizhou;Duan Hanqiao;Lin Hantong. EFFECTS OF YTTRIUM AND MISCHMETAL ON THE STRUCTURES AND IMPACT TOUGHNESS OF Mg-Y AND Mg-RE ALLOYS[J]. , 2003, 39(5): 130-133.

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EFFECTS OF YTTRIUM AND MISCHMETAL ON THE STRUCTURES AND IMPACT TOUGHNESS OF Mg-Y AND Mg-RE ALLOYS

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