Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1994-06-27
1996-01-02
Walsh, Donald P.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75245, 75246, 419 28, 428606, B22F 300
Patent
active
054804680
ABSTRACT:
Ni-base alloy foils are made directly from Ni-base alloy powders by hot pressing. These Ni-base alloy foils are characterized by having a thickness of 0.017 in. or less, and by the fact that they are fine-grained and substantially free of oxygen, nitrogen and deformation-induced defects. The as-pressed Ni-base foils are generally ductile and adapted for subsequent forming operations, including cold rolling. The reduction in thickness imparted in a single pass to a Ni-base alloy foil through cold-rolling ranged from 4-10% depending on the alloy composition. The total reduction in thickness ranged from about 10-50% based upon a plurality of such passes. For reductions in thickness greater than about 10%, annealing is employed for stress relief.
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Dupree Paul L.
Hughes John R.
Jackson Melvin R.
Ritter Ann M.
Wemple, Jr. Donald N.
Anderson Edmund P.
General Electric Company
Greaves John N.
Magee Jr. James
Walsh Donald P.
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