US4842817A
Expired / Lapsed
US
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Tantalum-modified titanium aluminum alloys and method of preparation
Assignee: General Electric Co
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Filing: 1987-12-28
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Granted: 1989-06-27
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Expires: 2007-12-28
Abstract
Abstract A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and aluminum to have what has been found to be highly desirable effective aluminum concentration by addition of tantalum according to the approximate formula Ti 48 Al 48 Ta 4 .
Inventors
- 👤 Huang Shyh-Chin
- 👤 Michael F. X. Gigliotti, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:54
CPC Classifications
C; C22; C22C; C22C14/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
33 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the following approximate atomic ratio: Ti.sub.48-47 Al.sub.46-49 Ta.sub.3-5, said alloy having a tensile strength of greater than 100 ksi.
Claim 2
Dependent Claim
33 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the following approximate atomic ratio: Ti.sub.48-47 Al.sub.46-49 Ta.sub.3-5, said alloy having a tensile strength of greater than 100 ksi.
Claim 3
Dependent Claim
33 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the approximate atomic ratio of: Ti.sub.49-47 Al.sub.48 Ta.sub.3-5, said alloy having a tensile strength of greater than 100 ksi.
Claim 4
Dependent Claim
33 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the approximate atomic ratio of: Ti.sub.49-47 Al.sub.48 Ta.sub.3-5, said alloy having a tensile strength of greater than 100 ksi.
Claim 5
Dependent Claim
34 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the following approximate atomic ratio: Ti.sub.50-47 Al.sub.46-49 Ta.sub.4 l, said alloy having a tensile strength of greater than 100 ksi.
Claim 6
Dependent Claim
34 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the following approximate atomic ratio: Ti.sub.50-47 Al.sub.46-49 Ta.sub.4 l, said alloy having a tensile strength of greater than 100 ksi.
Claim 7
Dependent Claim
33 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the approximate atomic ratio of: Ti.sub.48 Al.sub.48 Ta.sub.4, said alloy having a tensile strength of greater than 100 ksi.
Claim 8
Dependent Claim
33 words
A tantalum modified titanium aluminum alloy consisting essentially of titanium, aluminum and tantalum in the approximate atomic ratio of: Ti.sub.48 Al.sub.48 Ta.sub.4, said alloy having a tensile strength of greater than 100 ksi.
Claim 9
Dependent Claim
20 words
The alloy of claim 1, said alloy having been rapidly solidified from a melt and consolidated by heat and pressure.
Claim 10
Dependent Claim
34 words
The alloy of claim 1, said alloy having been rapidly solidified from the melt and then consolidated by heat and pressure and given a heat treatment at a temperature between 1250° and 1350° C.
Claim 11
Dependent Claim
20 words
The alloy of claim 2, said alloy having been rapidly solidified from a melt and consolidated by heat and pressure.
Claim 12
Dependent Claim
34 words
The alloy of claim 2, said alloy having been rapidly solidified from the melt and then consolidated by heat and pressure and given a heat treatment at a temperature between 1250° and 1350° C.
Claim 13
Dependent Claim
20 words
The alloy of claim 3, said alloy having been rapidly solidified from a melt and consolidated by heat and pressure.
Claim 14
Dependent Claim
34 words
The alloy of claim 3, said alloy having been rapidly solidified from the melt and then consolidated by heat and pressure and given a heat treatment at a temperature between 1250° and 1350° C.
Claim 15
Dependent Claim
20 words
The alloy of claim 4, said alloy having been rapidly solidified from a melt and consolidated by heat and pressure.
Claim 16
Dependent Claim
34 words
The alloy of claim 4, said alloy having been rapidly solidified from the melt and then consolidated by heat and pressure and given a heat treatment at a temperature between 1250 and 1350° C.
References Cited (Backward Citations)
US4294615A
Cited
US4661316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |