Alloys or metallic compositions – Nickel base – Chromium containing
Patent
1986-01-02
1991-11-26
Lechert, Jr., Stephen J.
Alloys or metallic compositions
Nickel base
Chromium containing
420445, 420446, 420447, 420448, 420449, 420450, C22C 1905
Patent
active
050680846
ABSTRACT:
An article exhibiting superior mechical properties and resistance to oxidation corrosion at elevated temperatures as described. The article has particular utility in gas turbine engines and is comprised of a nickel base superalloy consisting essentially of 3-10% Cr, 12.1-16% Co, 1.0-1.9% Mo, 3-10% W, 0-5% Re, 4-7% Al, 0-1.5% Ti, 0-8% Ta, 0.5-3% Hf, 0-2% Cb, 0-1% V, 0.02-0.12% Zr, 0.03-0.2% C, 0.005-0.25% B, 0-0.15% of an oxygen active element such as yttrium, balance essentially nickel. This composition is melted and directionally solidified in columnar grain form to provide useful articles.
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Cetel Alan D.
Duhl David N.
Lechert Jr. Stephen J.
Sohl Charles E.
United Technologies Corporation
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