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采用传统制造工艺制作的高温合金涡轮盘往往出现晶粒度粗大。不均匀以及宏、微观偏析等问题。这不仅会引起涡轮盘力学性能的不均匀性,而且降低了合金的强度、延性和抗疲劳性。采用粉末冶金制造工艺可有效地改善盘件的冶金质量,使组织均匀,晶粒细化,提高了力学性能和使用的可靠性。我国近年来进行了FGH95(相当于Rene 95)粉末涡轮盘的研制工作。FGH95粉末盘通过热等静压和等温锻造成型,由于热等静压后的坯料原始
High temperature alloy turbine discs made using traditional manufacturing processes tend to have coarse grain sizes. Uneven and macro, micro-segregation and other issues. This not only leads to the non-uniformity of the mechanical properties of the turbine disk, but also reduces the strength, ductility and fatigue resistance of the alloy. The use of powder metallurgy manufacturing process can effectively improve the quality of disk metallurgy, so that organizations, grain refinement, improved mechanical properties and the reliability of use. In recent years, our country FGH95 (equivalent to Rene 95) powder turbine disk research and development work. FGH95 powder plate by hot isostatic pressing and isothermal forging molding, hot isostatic pressing of the original blank