Abstract: Powder metallurgy(P/M) superalloys are selected as turbine disks and turbine ring materials for advanced aero engine applications due to their specific microstructure and high temperature properties. The research on sieve processing, powder treatment processing, case forging processing and heat treatment processing of FGH95 first generation PM superalloy in China during the early stage of 1980s is reviewed. Various fabrication processes, including plasma rotating electrode process(PREP), sieving, static electricity separating, hot isostatic pressing(HIP) and case forging, solution and salt bath etc, are emphasized. It is also introduced the developing advantages of FGH95 alloy produced using argon atomization(AA) and HIP forging processing, which is low-cost and improvement in the crack propagation resistance due to high temperature solution and slow cooling processing. The future investigation is also discussed.

Key words: Fabrication processing, FGH95 P/M Ni-base superalloy, Microstructure and property