Metal treatment – Stock – Nickel base
Patent
1996-12-17
1999-08-17
Zimmerman, John J.
Metal treatment
Stock
Nickel base
148556, 148677, 420448, 428544, C22C 1905, C22F 110
Patent
active
059388633
ABSTRACT:
A high strength nickel base superalloy article having a machined surface is disclosed. The superalloy comprises, in weight percent, 1.2-3.5 Al, 3.0-7.0 Ti, 12.0-20.0 Cr, 2.0-3.9 Mo, 10.0-20.0 Co, 0-4.5 W, 0.005-0.025 C, 0.005-0.05 B, 0.01-0.1 Zr, 0-0.005 Mg, 0-1.0 Ta, 0-1.0 Nb, 0-2.0 Fe, 0-0.3 Hf, 0-0.02 Y, 0-0.1 V, 0-1.0 Re, balance essentially Ni. The superalloy further comprises a plurality of discrete carbides essentially free from molybdenum for increased fatigue strength.
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Boyd, Esq. John E.
LaVilla Michael
United Technologies Corporation
Zimmerman John J.
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