Heat Dissipation Properties of Magnesium Rare-Earth Alloys

Zhang Yaqin; Xi Yajuan; Li Yuanfa; Gao Hailiang; Chen Wei; Huang Weizhong; Song Zhuoneng; Tang Dingxiang

doi:10.15980/j.tzzz.2015.05.005

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Heat Dissipation Properties of Magnesium Rare-Earth Alloys
Vol. 35, Issue 5, Pages: 463-465(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.05.005

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[1]张亚琴,席亚娟,李远发,高海亮,陈伟,黄维中,宋卓能,唐定骧.稀土镁合金的散热性能研究[J].特种铸造及有色合金,2015,35(05):463-465.

Zhang Yaqin, Xi Yajuan, Li Yuanfa, et al. Heat Dissipation Properties of Magnesium Rare-Earth Alloys. [J]. Special Casting & Nonferrous Alloys 35(5):463-465(2015)
[1]张亚琴,席亚娟,李远发,高海亮,陈伟,黄维中,宋卓能,唐定骧.稀土镁合金的散热性能研究[J].特种铸造及有色合金,2015,35(05):463-465. DOI： 10.15980/j.tzzz.2015.05.005.

Zhang Yaqin, Xi Yajuan, Li Yuanfa, et al. Heat Dissipation Properties of Magnesium Rare-Earth Alloys. [J]. Special Casting & Nonferrous Alloys 35(5):463-465(2015) DOI： 10.15980/j.tzzz.2015.05.005.

摘要

以Mg-RE系、AZ91D和ADC12合金为研究对象

室温下测定Mg-RE合金的化学成分

热扩散系数、密度

并根据NKR准则计算其比热容和热导率。高温环境下测试了合金的拉伸性能

并研究室温至300℃之间材料的温度变化曲线。结果表明

室温和高温环境下

稀土镁合金拉伸性能良好

在250℃时高温抗拉强度比AZ91D合金提高71%。稀土镁合金热导率高达101 W/（m·K）

比AZ91D合金提高40%;容热能力为1.778J/（cm3·K）

比AZ91D合金降低了7.0%。温度测试中

稀土合金升温和降温速度最快

平衡阶段传递的热量最多

说明稀土镁合金具有良好的导热散热性能。

Abstract

Chemical composition

thermal diffusion coefficient and density of Mg-RE series

AZ91 Dand ADC12alloy were measured at ambient temperature

meanwhile

the specific thermal capacity and thermal conductivity of the alloys were calculated based on the NKR standard.The results reveal that regardless of room temperature or high temperature

the Mg-RE alloy exhibits satisfied tensile properties.At 250 ℃

the tensile strength

thermal conductivity and thermal capacity of Mg-RE alloy reach 154 MPa

101 W/（m·K）and 1.778J/（cm3·K）

increased by 71%

40% and decreased by 7.0%

respectively

compared with those of AZ91 Dalloy.During temperature measuring process

the increment-temperature and decrement-temperature rate are the fastest

and heat transferring during balance process is the most

showing desirable dissipation ability of Mg-RE alloy.