US4310354A
Expired / Lapsed
US
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Process for producing a shape memory effect alloy having a desired transition temperature
Assignee: ALLEGHENY INTERNATIONAL ACCEPTANCE Corp
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Filing: 1980-01-10
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Granted: 1982-01-12
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Expires: 2000-01-10
Abstract
Abstract A process for producing a shape memory effect alloy having a desired transition temperature. The process includes the steps of: providing at least one prealloyed powder of a shape memory effect alloy having a chemistry similar to that of the to be produced alloy and a transition temperature below the desired transition temperature of the to be produced alloy; providing at least one other prealloyed powder of a shape memory effect alloy having a chemistry similar to that of the to be produced alloy and a transition temperature in excess of the desired transition temperature of the to be produced alloy; blending said prealloyed powders; consolidating said blended powders; and thermally diffusing said consolidated powders so as to provide a substantially homogeneous alloy of the desired transition temperature.
Inventors
- 👤 Richard W. Fountain
- 👤 William J. Boesch
- 👤 Steven H. Reichman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:13
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0433; B; B22; B22F; B22F1/00; B22F1/09; C22F; C22F1/00; C22F1/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
A process for producing a shape memory effect alloy having a desired transition temperature, which comprises the steps of: providing at least one prealloyed powder of a shape memory effect alloy having a chemistry similar to that of the to be produced alloy and a transition temperature below the desired transition temperature of the to be produced alloy; providing at least one other prealloyed powder of a shape memory effect alloy having a chemistry similar to that of the to be produced alloy and a transition temperature in excess of the desired transition temperature of the to be produced alloy; blending said prealloyed powders; consolidating said blended powders; and thermally diffusing said consolidated powders so as to provide a substantially homogeneous alloy of the desired transition temperature.
Claim 2
Dependent Claim
127 words
A process for producing a shape memory effect alloy having a desired transition temperature, which comprises the steps of: providing at least one prealloyed powder of a shape memory effect alloy having a chemistry similar to that of the to be produced alloy and a transition temperature below the desired transition temperature of the to be produced alloy; providing at least one other prealloyed powder of a shape memory effect alloy having a chemistry similar to that of the to be produced alloy and a transition temperature in excess of the desired transition temperature of the to be produced alloy; blending said prealloyed powders; consolidating said blended powders; and thermally diffusing said consolidated powders so as to provide a substantially homogeneous alloy of the desired transition temperature.
Claim 3
Dependent Claim
14 words
A process according to claim 1, including the step of producing said prealloyed powders.
Claim 4
Dependent Claim
24 words
A process according to claim 1, wherein said prealloyed powders contain at least 45 wt. % nickel and at least 30 wt. % titanium.
Claim 5
Dependent Claim
22 words
A process according to claim 1, wherein said prealloyed powders are nickel-titanium binary alloys containing from 53 to 62 wt. % nickel.
Claim 6
Dependent Claim
19 words
A shape memory effect alloy having a desired transition temperature, made in accordance with the process of claim 1.
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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) | 1985-01-11 | 1985-07-13 | 1986-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-11 | 1989-07-13 | 1990-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-11 | 1993-07-13 | 1994-01-12 | $7700.00 | Window Closed / Lapsed |