Present Research Situation And Prospect Of Hot Working Of Cast & Wrought Superalloys For Aero-Engine Turbine Disk In China

In recent years, the demand for high-performance aero-engines has become crucial in China, and the service environment of turbine disk alloy becomes increasingly severe. A series of high resistant cast & wrought superalloys for turbine disks, such as GH4065, GH4720Li, GH4068, and GH4151, with working temperatures > 700 degrees C, have been studied, produced, and applied widely. The current studies on cast & wrought alloys for turbine disks in China were summarized under the categories of homogenization treatment, cogging, disk forging, and microstructure and property regulation to promote the development of these superalloys and improve their comprehensive properties. The difficulties encountered during the research and preparation of these hard-to-deform superalloys and explored the alloys' potential development trend were outlined. The review would improve the production stability of the disk superalloys and promote their development.