Gamma-prime precipitation hardening nickel-base yttria particle-

Details Gamma-prime precipitation hardening nickel-base yttria particle- Gamma-prime precipitation hardening nickel-base yttria particle-

1990-07-12

1992-03-31

Yee, Deborah

Alloys or metallic compositions

Nickel base

Chromium containing

148410, C22C 1905

Patent

active

051006162

ABSTRACT:
A gamma-prime precipitation hardening nickel-base yttria particle-dispersion-strengthened superalloy having a composition consisting essentially, by weight %, of 3.5 to 6.0 % of Al, 7.0 to 10.0 % of Co, 8.0 to 10.5 % of Cr, 0.5 to 1.5 % of Ti, 4.0 to 6.5 % of Ta, 7.0 to 9.0 % of W, 1.5 to 2.5 % of Mo, 0.02 to 0.2 % of Zr, 0.001 to 0.1 % of C, 0.001 to 0.02 % of B, 0.5 to 1.7 % of Y.sub.2 O.sub.3 and the balance being Ni. It has an excellent high-temperature creep rupture strength and a good corrosion resistance at high temperatures.

REFERENCES:
patent: 4386976 (1983-06-01), Benn et al.
patent: 4717435 (1988-01-01), Kawaski et al.
patent: 4781772 (1988-11-01), Benn et al.

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