Alloys or metallic compositions – Nickel base – Chromium containing
Patent
1991-09-18
1992-10-13
Dean, R.
Alloys or metallic compositions
Nickel base
Chromium containing
148404, 148410, 148428, 148555, 148562, C22C 1905, C22F 110
Patent
active
051548844
ABSTRACT:
A nickel-base superalloy, particularly adapted for use in gas turbine engine single crystal blades and vanes is provided with a specific composition and heat treated in a particular manner to exhibit an improved balance of critical high temperature mechanical properties and resistance to oxidation and hot corrosion significantly superior to presently available alloys. In its broad form, the alloy composition comprises, by weight, 7-12% Cr, 1-5% Mo, 3-5% Ti, 3-5% Al, 5-15% Co, 3-12% W, up to 10% Re, 2-6% Ta, up to 2% Cb, up to 3% V, up to 2% Hf, the balance being essentially nickel and incidental impurities. Nickel-base superalloy single crystal articles formed of the alloy are described, as is the method, including heat treatment, employed to make the article.
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Buchakjian, Jr. Leo
Wukusick Carl S.
Dean R.
General Electric Company
Phipps Margery S.
Squillaro Jerome C.
Strunk Stephen S.
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