期刊
MATERIALS SCIENCE AND TECHNOLOGY
卷 33, 期 1, 页码 92-97出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670836.2016.1161130
关键词
Mg-Mn binary alloys; Thermal conductivity; Nano alpha-Mn particles; Extrusion
资金
- National Natural Science Foundation of China [51474043]
- Education Commission of Chongqing Municipality [KJZH14101]
- Chongqing Municipal Government [CSTC2013JCYJC60001]
This study investigated the microstructure and thermal conductivity of as-cast and as-extruded binary Mg-Mn alloys. The large grains and fine -Mn particles contained in the as-cast alloys were observed. After extrusion, the average grain sizes significantly decreased, typical basal fibre texture was generated and high amount of nano particles precipitated from the alpha-Mg matrix. The thermal conductivity of both as-cast and as-extruded Mg-Mn alloys gradually decreased with the increase in Mn concentration. As-extruded alloys exhibited lower thermal conductivity than as-cast alloys except for the as-extruded alloys containing higher Mn concentrations (>1.2wt-% Mn). Compared with binary as-extruded Mg-Al and Mg-Zn alloys reported in literatures, thermal conductivity of the as-extruded Mg-Mn alloys was higher when the solute content was greater than 0.5 at.-%.
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