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Effect of Bismuth Addition on Microstructure and Mechanical Properties of Mg-6Al-1Sm Mg-alloy

Huang Zhenghua

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Abstract

The effects of bismuth addition on the microstructure and mechanical properties of Mg-6Al-1Sm magnesium alloy were studied through the alloy preparation,microstructure analysis and tensile tests.The results show that,adding proper amount Bi to Mg-6Al-1Sm alloy,the as-cast microstructure of the alloy refines,and the Mg3Bi2 grain phase with high thermal stability is observed in the matrix.At the same time,the mechanical properties of the alloy at room temperature and high temperature enhance and the heat resistance improves.

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What this paper is about

The effects of bismuth addition on the microstructure and mechanical properties of Mg-6Al-1Sm magnesium alloy were studied through the alloy preparation,microstructure analysis and tensile tests.The results show that,adding proper amount Bi to Mg-6Al-1Sm alloy,the as-cast microstructure of the alloy refines,and the Mg3Bi2 grain phase with high thermal stability is observed in the matrix.At the same time,the mechanical properties of the alloy at room temperature and high temperature enhance and the heat resistance improves.

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Available abstract

The effects of bismuth addition on the microstructure and mechanical properties of Mg-6Al-1Sm magnesium alloy were studied through the alloy preparation,microstructure analysis and tensile tests.The results show that,adding proper amount Bi to Mg-6Al-1Sm alloy,the as-cast microstructure of the alloy refines,and the Mg3Bi2 grain phase with high thermal stability is observed in the matrix.At the same time,the mechanical properties of the alloy at room temperature and high temperature enhance and the heat resistance improves.

Key concepts: Microstructure, Alloy, Materials science, Metallurgy, Ultimate tensile strength, Bismuth, Magnesium alloy, 6111 aluminium alloy

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