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| Research progress on hot extrusion process of P/M superalloy |
| SHI Yingnan 1，2，SUN Shaobin 1，2，QU Jinglong 1，2，LIU Mingdong 1，2，RONG Kun 1，2，JIA Jian 1，2 |
| （ 1. Gaona Aero Material Co. Ltd., Beijing 100081, China; 2 High Temperature Materials Institute, Central Iron
and Steel Research Institute, Beijing 100081, China） |
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Abstract The development and application of hot extrusion process for P/M superalloys in Europe and US were
summarized. The research progress of hot extrusion process for P/M superalloys in China was described. The selection
principles of extrusion process parameters for René 95, René 88DT and FGH4096 alloys were introduced. The
influence of extrusion process parameters (extrusion ratio, extrusion speed, extrusion temperature, etc.) on the extrusion
forming, microstructure and properties of P/M superalloys was emphatically expounded. The evolution behavior
of non-metallic inclusions in P/M superalloys during hot extrusion was clarified.
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Received: 31 October 2022
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2024, Vol. 34 
