Ni-based single crystal superalloy

Details Ni-based single crystal superalloy Ni-based single crystal superalloy

C - Chemistry, Metallurgy

22

C

C22C 19/05 (2006.01) C22F 1/02 (2006.01) C22F 1/10 (2006.01) F01D 5/28 (2006.01) F01D 25/00 (2006.01) F02C 7/00 (2006.01) C22F 1/00 (2006.01)

Patent

CA 2749755

Disclosed is a Ni-based single crystal alloy which has a chemi-cal composition comprising 8 to 12% by mass of Co, 5 to 7.5% by mass of Cr, 0.2 to 1.2% by mass of Mo, 5 to 7% by mass of W, 5 to 6.5% by mass of Al, 8 to 12% by mass of Ta, 0.01 to 0.2% by mass of Hf, 2 to 4% by mass of Re and 0.005 to 0.1% by mass of Si, with the remainder being Ni and un--avoidable impurities, and is a single crystal.

L'invention concerne un alliage monocristallin à base de nickel dont la composition est la suivante : 8 à 12% en masse de Co, 5 à 7,5% en masse de Cr, 0,2 à 1,2% en masse de Mo, 5 à 7% en masse de W, 5 à 6,5% en masse de Al, 8 à 12% en masse de Ta, 0,01 à 0,2% en masse de Hf, 2 à 4% en masse de Re et 0,005 à 0.1% en masse de Si, la partie restante étant constituée de Ni et d'impuretés inévitables. L'alliage cristallin de l'invention est un monocristal.

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