US5152960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium-aluminum intermetallic having nitrogen in solid solution
Assignee: Toyota Motor Corp
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Filing: 1991-05-10
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Granted: 1992-10-06
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Expires: 2011-05-10
Abstract
Abstract Disclosed are a Ti-Al alloy including aluminum (Al) in an amount of 30 to 38% by weight, nitrogen (N) in an amount of 0.2 to 1.0% by weight, and titanium (Ti), substantially the balance, and a process for producing the same. Since the Ti-Al alloy includes the nitrogen in the predetermined amount, the microstructure of the Ti-Al ally can be micro-fined and made into a uniform one, and accordingly the shrinkage cavities can be reduced remarkably. Therefore, the strength, the ductility or the like of the Ti-Al alloy can be improved remarkably. With the production process, it is possible to produce the Ti-Al alloy including the nitrogen in the predetermined range.
Inventors
- 👤 Isamu Yuki
- 👤 Minoru Uozumi
- 👤 Ryoji Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:06
CPC Classifications
C; C22; C22C; C22C14/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
50 words
A Ti-Al alloy consisting essentially of: aluminum (Al) in an amount of 30 to 38% by weight; nitrogen (N) in an amount of more than 0.3 to less than 0.8% by weight; and titanium (Ti), substantially the balance, with said alloy having a grain size of 0.1 mm or less.
Claim 2
Dependent Claim
50 words
A Ti-Al alloy consisting essentially of: aluminum (Al) in an amount of 30 to 38% by weight; nitrogen (N) in an amount of more than 0.3 to less than 0.8% by weight; and titanium (Ti), substantially the balance, with said alloy having a grain size of 0.1 mm or less.
Claim 3
Dependent Claim
23 words
The Ti-Al alloy according to claim 1, wherein said amount of aluminum (Al) falls in a range of 32 to 36% by weight.
Claim 4
Dependent Claim
21 words
The Ti-Al alloy according to claim 1, wherein said Ti-Al alloy exhibits a minimum tensile stress of 25.4 kgf/mm 2 .
Claim 5
Dependent Claim
17 words
The Ti-Al alloy according to claim 1, wherein said Ti-Al alloy exhibits a minimum elongation of 0.3%.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |