Evaluation of the Effect of Nd Content and Extrusion Process on Thermal Conductivity of Mg-Mn-Zn-Nd Alloys

Crystals

Dong-Mei Luo¹  Dong-Chu Chen²  Jie Liu³  Ying-Long Zhou³ 

[1] Department of Civil Engineering, Foshan University, Foshan 528000, Guangdong, China;Department of Materials Science and Engineering, Foshan University, Foshan 528000, Guangdong, China;Department of Mechatronics Engineering, Foshan University, Foshan 528000, Guangdong, China;

关键词: Mg alloy;    microstructure;    extrusion process;    thermal conductivity;    heat dissipation;   

DOI  :  10.3390/cryst8110427

来源: DOAJ

【 摘 要 】

The thermal conductivity of the Mg-1Mn-2Zn-xNd alloys (x = 0.5, 1.0, 1.5 wt. %) was studied for the potential applications of heat dissipation. The phase constituents were examined by X-ray diffraction analysis, and the microstructure was observed by light and scanning electron microscopes. The thermal conductivity of the Mg alloys was gauged at room temperature using laser flash method. The experimental results indicate that the thermal conductivity of both the cast and extruded Mg alloys decreases slowly with Nd content, and the extrusion process remarkably reduces the grain sizes and thermal conductivity of the Mg alloys. The thermal conductivity of cast Mg-1Mn-2Zn-xNd alloys exceeds the required critical value (100 W/(m·k)) for the cast Mg alloys. Among them, the cast Mg-1Mn-2Zn-1Nd alloy has great potential to be a good candidate of heat dissipation materials due to its good combination of thermal and mechanical properties.

【 授权许可】

Unknown