航空发动机涡轮叶片精密成形技术及其发展趋势

空心涡轮叶片一直是制约我国高性能航空发动机研制的瓶颈。针对空心涡轮叶片精铸合格率较低的问题，在讨论涡轮叶片精密铸造工艺的基础上，从精铸“控形”及“控性”两方面，对涡轮叶片精铸成形技术的研究成果进行了总结。此外，围绕未来更高性能航空发动机涡轮叶片，从材料、结构、工艺的角度对其发展趋势进行了讨论。分析认为，陶瓷基复合材料有望在发动机涡轮叶片上得到更广泛的应用。

Precision Forming Technology and Its Development Trend of Aeroengine Turbine Blade

Hollow turbine blade is one of the key parts which restricts the development of high performance aero-engine. Aiming at the issue of low pass ratio of turbine blade, the shape and material properties monitoring methods are reviewed based on the investigation of investment casting process in this paper. Moreover, the development trends of next generation turbine blade are discussed from the aspects of materials, structures, and manufacturing process respectively. The analysis shows that ceramic matrix composites are expected to be widely used on turbine blade in the future.