Nickel-chromium-beryllium alloy
Abstract
Abstract THIS INVENTION RELATES TO A NICKEL-CHROMIUM-BERYLIUM ALLOY HAVING A MICROSTRUCTURE WHICH PROVIDES OBSTACLES TO PLASTIC FLOW IN THE NICKEL RICH MATRIX PHASE SO THAT HIGH STRENGTH PROPERTIES ARE OBTAINED AT BOTH ROOM AND ELEVATED TEMPERATURES. THE ALLOY MAY ALSO CONTAIN OTHER ADDITIVES INCLUDING ALUMINUM AND/OR TITANIUM TOGETHER WITH HARDENSERS INCLUDING MOLYBDENUM AND/OR TUNGSTEN, WITH OR WITHOUT CARBON. A METHOD OF PROCESSING THE ALLOY COMPRISES: MELTING THE ALLOYING INGREDIENTS IN A CRUCIBLE WHILE AVOIDING THE PRESENCE OF OXYGEN; RAISING THE TEMPERATURE TO 1450 TO 1550*C.; CASTLING THE ALLOY IN A MOLD. THE ALLOY MAY BE REMELTED AND CAST IN AN APPARATUS TO EFFECT ABSTRACTION OF HEAT FROM THE CASTING FROM ONE DIRECTION ONLY TO OBTAIN A DIRECTIONALLY ORIENTATED MICROSTRUCTURE.
Inventors
- 👤 Leonard B Griffiths
- 👤 Yuan-Shou Shen
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |