2010•Materials science forumRequires access

Microstructure and Tensile Properties of an Mg-5Sn-5Zn Alloy

Ji Zhou, Yuansheng Yang, Shou Qiu Tang, Chang Tian

Abstract

The microstructure and tensile properties at room temperature of as-cast, solution-treated and aged samples of a Mg-5Sn-5Zn (wt%) alloy are investigated. The microstructure of the as-cast sample consists of -Mg primary, Mg-MgZn eutectic, divorced eutectic Mg2Sn and secondary precipitation Mg2Sn. After solution treatment, all the MgZn particles and the majority of Mg2Sn phases are dissolved into the matrix and the tensile strength and the elongation of the alloy increase obviously. During aging process many fine particles precipitate which result in the improvement of the yield strength.

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Key concepts: Materials science, Microstructure, Eutectic system, Ultimate tensile strength, Alloy, Elongation, Precipitation, Metallurgy