1. National Engineering Research Center of Light Alloys Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China;
2. The State Key Lab of Metal Matrix Composite, Shanghai 200240, China;
3. Yangzhou Fengming Photoelectric New Material Co., Ltd., Yangzhou 225117, China;
4. Shanghai Aerospace Precision Machinery Institute, Shanghai 201600, China
Abstract：Magnesium rare-earth (Mg – RE) alloys exhibit the advantages of low densities, high specific strength and specific stiffness, desirable heat resistance, and good damping properties. The application of Mg – RE alloys in the aero-engine components can effectively reduce the equipment weight and system noise, improve the load capacity and maneuverability of aircraft. In this article, the classification of cast Mg – RE alloys is first introduced with different strengthening mechanisms. Various casting processes are reviewed and their effects on the microstructure and properties of Mg – RE alloys are also analyzed. Then the requirements for the use of Mg alloys in the existing aero-engine airworthiness standards and general standards are summarized, following by the application status of casting Mg – RE alloys in aero-engine and some other aerospace components at home and abroad. Finally, the problems and development trends of Mg–RE alloys used in aero-engine are discussed according to the actual engineering application requirements.
吴国华，童鑫，眭怀明，魏广玲，肖旅. 铸造镁稀土合金研究现状及其在航空发动机领域应用展望[J]. 航空制造技术, 2022, 65(3): 14-29.
WU Guohua，TONG Xin，SUI Huaiming，WEI Guangling，XIAO Lü. Research Status of Cast Mg–RE Alloy and Its Application Prospect in Aero-Engine. Aeronautical Manufacturing Technology, 2022, 65(3): 14-29.
2022, 
