Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1994-06-27
1996-11-05
Walsh, Donald P.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75228, 75245, 419 28, B22F 706
Patent
active
055713041
ABSTRACT:
Oxide dispersion strengthened (ODS) Ni-base alloy foils are made directly from powders of these alloys by hot pressing. These ODS 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 nitrogen and deformation induced defects. The as-pressed ODS Ni-base alloy foils are adapted for subsequent forming operations, including cold rolling. The reduction in thickness imparted in a single pass to an Ni-base alloy foil through cold-rolling was about 8%. The total reduction in thickness was about 55% based upon a plurality of such passes. For reductions in thickness greater than 20%, annealing is employed for stress relief.
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Dupree Paul L.
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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