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US3963525A
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Method of producing a hot-worked titanium product
Assignee: RMI Co
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Filing: 1974-10-02
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Granted: 1976-06-15
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Expires: 1994-10-02
Abstract
Abstract A method of producing a hot-worked titanium product in which a minute quantity of a workability-enhancing agent is incorporated in the melting charge. The agent may be yttrium, a rare earth of atomic number 57 to 71, or combinations thereof, and may be in the form of the metal itself or a compound, such as the oxide. The agent has the effect of making bodies of the material more workable; that is, more drastic working is achieved without reheating of the material between hot-working steps, yet any significant surface-cracking is avoided in the product.
Inventors
- 👤 Howard B. Bomberger, Jr.
- 👤 Stanley R. Seagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:09
CPC Classifications
C; C22; C22C; C22C14/00; C22F; C22F1/00; C22F1/16; C22F1/18; C22F1/183; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
126 words
A method of producing a hot-worked titanium product comprising making up a melting charge of titanium or a titanium-base alloy and a workability-enhancing agent selected from the group consisting of the metals yttrium, a rare earth of atomic number 57 to 71, and combinations thereof, the agent being included in an amount of about 0.001 to 0.10 percent of the weight of the charge and being initially in the form of the metal itself or a compound thereof, melting said charge and casting it to form an ingot, heating said ingot to a temperature of about 1700 to 2300F, and hotworking the ingot to achieve about 30 to 90 percent working in the initial working step without reheating and without producing significant surface-cracking in the product.
Claim 2
Independent Claim
126 words
A method of producing a hot-worked titanium product comprising making up a melting charge of titanium or a titanium-base alloy and a workability-enhancing agent selected from the group consisting of the metals yttrium, a rare earth of atomic number 57 to 71, and combinations thereof, the agent being included in an amount of about 0.001 to 0.10 percent of the weight of the charge and being initially in the form of the metal itself or a compound thereof, melting said charge and casting it to form an ingot, heating said ingot to a temperature of about 1700 to 2300F, and hotworking the ingot to achieve about 30 to 90 percent working in the initial working step without reheating and without producing significant surface-cracking in the product.
Claim 3
Dependent Claim
22 words
A method as defined in claim 1 in which the agent is included in an amount of about 0.001 to 0.05 percent.
Claim 4
Dependent Claim
23 words
A method as defined in claim 1 in which said agent is yttrium and is initially in the form of a compound thereof.
Claim 5
Dependent Claim
14 words
A method as defined in claim 1 in which said compound is the oxide.
Claim 6
Dependent Claim
15 words
A method as defined in claim 1 in which said agent is a rare earth.
Claim 7
Dependent Claim
30 words
A method as defined in claim 1 in which said agent is selected from the group consisting of yttrium, neodymium, cerium, lanthanum, samarium, praseodymium, erbium, gadolinium, dysprosium, and combinations thereof.
Claim 8
Dependent Claim
36 words
A method as defined in claim 1 in which said charge consists of said agent and a titanium-base alloy of the group consisting nominally of Ti-5Al-2.5Sn, Ti-6Al-2Cb-1Ta-0.8Mo, Ti-6Al-4V, Ti-8Al-1Mo-1V, and Ti-6Al-2Sn-4Zr-2Mo with or without added Si.
Claim 9
Dependent Claim
15 words
A method as defined in claim 7 in which said agent is a rare earth.
Claim 10
Dependent Claim
30 words
A method as defined in claim 7 in which said agent is selected from the group consisting of yttrium, neodymium, cerium, lanthanum, samarium, praseodymium, erbium, gadolinium, dysprosium, and combinations thereof.
Claim 11
Dependent Claim
23 words
A method as defined in claim 7 in which said agent is yttrium and is initially in the form of a compound thereof.
Claim 12
Dependent Claim
14 words
A method as defined in claim 8 in which said compound is the oxide.
Claim 13
Independent Claim
108 words
A method of producing a hot-worked titanium product comprising casting a body of titanium or a titanium-base alloy and a workability-enhancing agent selected from the group consisting of the metals yttrium, a rare earth of atomic numbers 57 to 71, and combinations thereof, the agent being included in an amount of 0.001 to 0.10 percent and being initially in a form of the metal itself or a compound thereof, heating said body to a temperature of about 1700° to 2300°F, and hot-working the heated body to achieve about 30 to 90 percent working in the initial working step without reheating and without producing significant surface-cracking in the product.
Claim 14
Independent Claim
108 words
A method of producing a hot-worked titanium product comprising casting a body of titanium or a titanium-base alloy and a workability-enhancing agent selected from the group consisting of the metals yttrium, a rare earth of atomic numbers 57 to 71, and combinations thereof, the agent being included in an amount of 0.001 to 0.10 percent and being initially in a form of the metal itself or a compound thereof, heating said body to a temperature of about 1700° to 2300°F, and hot-working the heated body to achieve about 30 to 90 percent working in the initial working step without reheating and without producing significant surface-cracking in the product.
Claim 15
Dependent Claim
22 words
A method as defined in claim 12 in which said agent is yttrium and is initially in the form of the oxide.
Claim 16
Dependent Claim
36 words
A method as defined in claim 12 in which said body consists of said agent and a titanium-base alloy of the group consisting nominally of Ti-5Al-2.5Sn, Ti-6Al-2Cb-1Ta-0.8Mo, Ti-6Al-4V, Ti-8Al-1Mo-1V, and Ti-6Al-2Sn-4Zr-2Mo with or without added Si.
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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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |