US4661316A
Expired / Lapsed
US
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Heat-resistant alloy based on intermetallic compound TiAl
Assignee: National Institute for Materials Science
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Filing: 1985-07-30
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Granted: 1987-04-28
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Expires: 2005-07-30
Abstract
Abstract A heat-resistant alloy comprising an alloy based on an intermetallic compound TiAl composed of 60 to 70% by weight of titanium and 30 to 36% by weight of aluminum, and 0.1 to 5.0% by weight of manganese.
Inventors
- 👤 Kenki Hashimoto
- 👤 Haruo Doi
- 👤 Tsujimoto Tokuzou
- 👤 Nakano Osamu
- 👤 Nobuki Minoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:27
CPC Classifications
C; C22; C22C; C22C14/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
41 words
A heat-resistant alloy consisting essentially of (1) an alloy based on an intermetallic compound TiAl composed of 60 to 70% by weight of titanium and 30 to 36% by weight of aluminum and (2) 0.1 to 5.0% by weight of manganese.
Claim 2
Dependent Claim
41 words
A heat-resistant alloy consisting essentially of (1) an alloy based on an intermetallic compound TiAl composed of 60 to 70% by weight of titanium and 30 to 36% by weight of aluminum and (2) 0.1 to 5.0% by weight of manganese.
Claim 3
Dependent Claim
16 words
The alloy of claim 1 wherein the content of aluminum is 31 to 35% by weight.
Claim 4
Dependent Claim
16 words
The alloy of claim 1 wherein the amount of manganese is 0.5 to 3.0% by weight.
Claim 5
Dependent Claim
85 words
The alloy of claim 1 which further contains at least one element selected from the group consisting of (a) zirconium in an amount of 0.6 to 2.8% by weight; (b) niobium in an amount of 10.6 to 4.0% by weight; (c) vanadium in an amount of 01.6 to 1.9% by weight; (d) tungsten in an amount of 0.5 to 1.2% by weight; (e) molybdenum in an amount of 0.5 to 1.2% by weight; and (f) carbon in an amount of 0.02 to 0.12% by weight.
References Cited (Backward Citations)
US3203794A
Cited
US4294615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |