(中南大學(xué) 材料科學(xué)與工程學(xué)院， 長沙 410083)
摘 要: 綜述了耐熱鎂合金及其研究進展。介紹了Mg-Al、 Mg-Zn、 Mg-RE、 Mg-Th、 Mg-Ag合金系及鎂基復(fù)合材料、 快速凝固鎂合金在耐熱性能方面的發(fā)展；認(rèn)為Mg-RE系合金由于其優(yōu)良的耐熱性能，可在我國大力發(fā)展， 但堿土金屬可部分代替昂貴的稀土元素。 對這些合金來說， 研究耐熱相及結(jié)構(gòu)對提高合金的高溫強度和熱穩(wěn)定性是非常重要的。
關(guān)鍵字: 鎂合金； 耐熱性； 抗蠕變性能； 綜述
（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
