(中南大学 材料科学与工程学院， 长沙 410083)
摘 要: 综述了耐热镁合金及其研究进展。介绍了Mg-Al、 Mg-Zn、 Mg-RE、 Mg-Th、 Mg-Ag合金系及镁基复合材料、 快速凝固镁合金在耐热性能方面的发展；认为Mg-RE系合金由于其优良的耐热性能，可在我国大力发展， 但碱土金属可部分代替昂贵的稀土元素。 对这些合金来说， 研究耐热相及结构对提高合金的高温强度和热稳定性是非常重要的。
关键字: 镁合金； 耐热性； 抗蠕变性能； 综述
（School of Materials Science and Engineering，Central South University, Changsha 410083, China）
Abstract: Heat-resistant magnesium alloys and their development are reviewed. Mg-Al, Mg-Zn, Mg-RE, Mg-Th, Mg-Ag system alloys, rapid solidification magnesium alloy and magnesium-based composite in heat resistance are introduced. It suggested that Mg-RE system alloys can be rapidly developed because of their excellent heat-resistant property， but the alkaline earth metal elements can partially substitut the expensive RE elements. The heat-resistant phases and structures are very important to those alloys for their high strength and heat-resistant stability at elevated temperatures.
Key words: magnesium alloys; heat resistance; creep resistance; review
