(1. 上海交通大学 轻合金精密成型国家工程研究中心，上海 200240；
2. 上海交通大学 金属基复合材料国家重点实验室，上海 200240)
摘 要: Mg-Gd-Y-Zr 合金由于具有优异的室温、高温力学性能及抗蠕变性能而成为镁合金研究的热点。本文作者总结国内外 Mg-Gd-Y-Zr 合金的研究进展，分析熔体纯净化技术开发现状、热变形行为、强化机制以及断裂机制，讨论Mg-Gd-Y-Zr 合金蠕变机理、腐蚀机理及表面处理技术的研究情况，并对Mg-Gd-Y-Zr合金固态回收技术进行介绍，最后，对该合金未来的发展方向进行展望。
关键字: Mg-Gd-Y-Zr 镁合金；高强耐热；腐蚀行为；时效析出；固态回收
heat resistant Mg-Gd-Y-Zr alloys
（1. National Engineering Research Center of Light Alloy Net Forming,
Shanghai Jiao Tong University, Shanghai 200240, China;
2. Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China）
Abstract:Mg-Gd-Y-Zr alloys are increasingly investigated in recent years due to their excellent mechanical properties at room and elevated temperatures and good creep resistance. The research progress on the alloys all over the world was reviewed, and then the development of new flux, hot deformation behavior, strengthening mechanisms and fracture mechanisms were analyzed. Moreover, the creep mechanism, corrosion mechanism, surface treatment technology and the solid-state recycling on Mg-Gd-Y-Zr alloys were summarized. At last, further research areas on Mg-Gd-Y-Zr alloys were suggested.
Key words: Mg-Gd-Y-Zr magnesium alloys; high strength and heat resistant; corrosion behavior; aging precipitation; solid-state recycling
