US3783032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing directionally solidified nickel base alloy
Assignee: General Electric Co
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Filing: 1972-07-31
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Granted: 1974-01-01
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Expires: 1992-07-31
Abstract
Abstract A METHOD OF MAKING A CAST BODY FROM A NICKEL BASE ALLOY HAVING IMPROVED STRESS RUPTURE STRENGTH IS PROVIDED. THE METHOD INVOLVES FORMING A NICKEL BASE ALLOY CONTAINING A CAREFULLY CONTROLLED COMBINATION OF GAMMA PRIME FORMING ELEMENTS AL, TI AND TA ALONG WITH A CRITICAL AMOUNT OF CR, POURING THE MOLTEN ALLOY INTO A MOLD AND DIRECTIONALLY SOLIDIFYING IT INTO A CAST BODY, REMOVING THE LOW MELTING SEGREGATED PHASES FROM THE DIRECTIONALLY SOLIDIFIED CAST BODY BY A DISSOLUTION HEAT TREATMENT TO PERMIT THE SEGREGATED PHASES TO DISSOLVE IN SOLID SOLUTION WITHOUT INCIPIENT MELTING, AND COOLING THE CAST BODY TO ROOM TEMPERATURE.
Inventors
- 👤 J Walker
- 👤 T Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:04
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |