Thermal conductivity and mechanical properties of Sm-containing Mg-Zn-Zr alloys |
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| Authors: | Chubin Yang Xianhua Chen Ning Luo Baojun Han Tianyong Zhou |
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| Affiliation: | 1. National Engineering Research Center for Magnesium Alloy, College of Materials Science and Engineering, Chongqing University, Chongqing, PR China;2. Jiangxi Provincial Engineering Research Center for Magnesium Alloy, Gannan Normal University, Ganzhou, PR China;3. Jiangxi Provincial Engineering Research Center for Magnesium Alloy, Gannan Normal University, Ganzhou, PR China |
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| Abstract: | This study investigated the effect of Sm additions on the microstructure, thermal conductivity, and mechanical properties of Mg-Zn-Zr alloy. The results indicate that the addition of Sm led to the formation of a rare-earth phase at the grain boundaries, and the grain size was significantly refined in the extruded state. The thermal conductivity of Mg alloy increased with the increase in Sm content because of the formation of a rare-earth phase that helps to dissolve the Zn atoms in the α-Mg matrix. Moreover, the as-extruded Mg alloy exhibited a higher thermal conductivity (up to124?W?(m?K)?1) than its as-cast counterparts. The Sm-containing as-extruded Mg alloy showed excellent yield strength of up to 254?MPa, and also a good plastic deformation ability. |
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| Keywords: | Mg alloys thermal conductivity mechanical properties Sm |
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