GH2901 is a Fe-Ni-Cr-based precipitation hardening deformation superalloy. The alloy is aging strengthened with metastable γ'{Ni3(TI,Al)} phase, and a small amount of aluminum inhibits the transformation of γ'to ηNi3Ti phase. The alloy has high yield strength and endurance strength below 650ºC, good oxidation resistance below 760ºC, and stable organization after long-term use. The main products are turbine discs, compressor discs, journals, static structural parts, turbine outer rings and fasteners.
Chemical Composition %
Carbon C: (0.02~0.06)
Silicon Si: (0.40)
Manganese Mn: (0.50)
Chromium Cr: (11.0~14.0)
Nickel Ni: (40.0~45.0)
Aluminum Al (≤0.30)
Boron B (0.01~0.02)
Copper Cu: (0.20)
Phosphorus p(0.020)
Heat treatment system
Solid solution at 11090ºC for 180 minutes, water cooling or air cooling
Aging treatment 775ºC for 4 hours, air cooling +705-725ºC for 24 hours, air cooling
Physical properties:
Density:
8.21g/cm3
Melting point: 1360ºC
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