THERMAL CONDUCTIVITY OF MAGNESIUM ALLOYS
Recently, magnesium alloys have been widely used as lightweight structural materials in manufacturing of automobile, air plane and portable computers. The magnesium alloys have extremely low density and high rigidity. The density of magnesium is as low as 1738 kg/m3, which makes it suitable for such applications as above. In this study, we studied thermal conductivity of two different magnesium alloys made by twin-roll casting with laser flash technique and by differential scanning calorimeter. Thermal diffusivity of the magnesium alloys, AZ31 and AZ61 were measured over temperature ranging from -125 to 400 ℃. AZ 31 and AZ61 are composed of magnesium, aluminum and zinc. Thermal conductivity gradually increased with measurement temperature. Densities of magnesium alloys, AZ31 and AZ61, were 1754 and 1777 kg/m3, respectively. Thermal conductivity of AZ31 alloy was about 25％ higher than that of the AZ61 due its dependence on precipitation status.
Sang Hyun Lee Hye Jeong Ham Su Yong Kwon Sok Won Kim Chang Min Suh
Division of Physical Metrology,Korea Research Institute of Standards and Science, Daejeon 305-340,Re Department of Mechanical Engineering Kyungpook National University Daegu 702-701, Rep. of Korea 3Department of Physics, University of Ulsan, Ulsan 680-749 Rep. of Korea
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
664-667
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）