Nickel-base heat-resistant alloys

Details Nickel-base heat-resistant alloys Nickel-base heat-resistant alloys

1992-06-19

1995-07-11

Wyszomierski, George

Metal treatment

Stock

Age or precipitation hardened or strengthened

148428, 420443, 420448, C22C 1905

Patent

active

054317509

ABSTRACT:
The improved nickel-base heat-resistant alloy consists of 13.1-15.0% Cr (all percentages that follows are by weight), 8.5-10.5% Co, 1.0-3.5% Mo, 3.5-4.5% W, 3.0-5.5% Ta, 3.5-4.5% Al, 2.2-3.2% Ti, 0.06-0.12% C, 0.005-0.025% B, 0.010-0.05% Zr and 1-100 ppm of Mg and/or Ca, in the optional presence of 0-1.5% Hf and/or 0-0.5% of at least one element of Pt, Rh and Re, with the remainder being Ni and incidental impurities. The alloy has high strength and high resistance to oxidation and corrosion at elevated temperatures and, hence, is suitable for use as a constituent material for machine parts that are to be exposed to elevated temperatures.

REFERENCES:
patent: 3459545 (1969-08-01), Bieber et al.
patent: 3765879 (1973-10-01), Hockin et al.
patent: 4719080 (1988-01-01), Duhl et al.
patent: 5055147 (1991-10-01), Henry
patent: 5077141 (1991-12-01), Naik et al.

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