Abstract

The microstructure and mechanical properties of rapidly solidified powder metallurgy Mg-5Sn alloy were studied in this paper. The results show the nano-scale Mg2Sn phases are dispersed homogeneously in the fine α-Mg matrix for the RS P/M Mg-5Sn alloy. In addition, it is also found that the submicron structure appears in the Mg matrix of RS P/M alloy. The tensile strength, yield strength and elongation are 342.8 MPa, 337.5 MPa and 6.5%, respectively, which increases correspondingly by 215.4%, 752.3% and decreases by 9.7% in comparison with that of the as-cast Mg-5Sn alloy, and the tensile fracture is obvious dimples.

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