综述了近年来国内外针对镁合金导热性能的研究进展，在分析镁合金导热机理的基础上，重点总结分析了温度、合金元素及成分、挤压变形和热处理工艺对镁合金导热性能的影响。综述主要结论为：(1)镁合金导热是电子和声子运动共同作用的结果，各工艺因素主要通过改变微观组织，从而影响电子和声子的运动方式对镁合金导热性能产生影响；(2)除某些合金在接近绝对零度时热导率随温度升高“先升-后降-再升”外，镁合金热导率随温度升高主要是呈增加趋势的；(3)除适量添加某些合金元素外，大多数合金元素的加入均会导致镁合金热导率降低；(4)挤压变形使镁合金导热率下降，且使热导率呈现各向异性；(5)固溶热处理使镁合金热导率下降，但固溶＋时效热处理可使热导率增加。
The recent research progress of thermal conductivity of magnesium alloy was reviewed.The effects of temperature,alloying elements,extrusion and heat treatment on thermal conductivity of magnesium alloy were analyzed respectively.The chief conclusions are as follows:(1 )Thermal conductivity of magnesium alloy is based on the movement of electron and phonon.The processing factors influence the thermal conductivity by changing the microstructure of alloy that has direct effects on the movement of electron and phonon;(2)Ther-mal conductivity of most magnesium alloys increase with increasing temperature,while that of some magnesium alloys increase firstly,followed by decreasing and increasing again near the temperature of absolute zero;(3 ) Except for some alloying elements,the addition of most alloying elements has a negative effect on thermal con-ductivity of magnesium alloy;(4)Extrusion decrease thermal conductivity of magnesium alloy and lead to ani-sotropy of thermal conductivity;(5)Thermal conductivity of magnesium alloy decrease after solution treatment and slightly increase after subsequent aging treatment.
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