US3640781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-phase nickel-zinc alloy
Assignee: Individual
•
Filing: 1969-10-14
•
Granted: 1972-02-08
•
Expires: 1989-10-14
Abstract
Abstract Process of heat treating and mechanically working nickel-zinc alloys or copper-nickel-zinc alloys produces products having special alpha-beta microstructure characterized by high strength at room temperature and high deformability at elevated temperatures.
Inventors
- 👤 Frank Joseph Ansuini
- 👤 Jacob Schramm
- 👤 Frank Arthur Badia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:08
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/04; C22C19/00; C22C9/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
35 words
A process as set forth in claim 1 which also comprises solution heat-treating the alloy to dissolve any precipitated phases therein and place the alloy in the solid-solution condition prior to commencing the cold working.
Claim 2
Dependent Claim
46 words
A process as set forth in claim 2 wherein the alloy is solution-treated by heating at about 50* F. to about 200* F. above the solvus for at least 10 minutes and cooled to room temperature sufficiently rapidly to maintain the alloy in the solid-solution condition.
Claim 3
Dependent Claim
35 words
A process as set forth in claim 1 wherein the cold-worked alloy is heated to a temperature of about 50* F. to about 200* F. below the solvus to accomplish the simultaneous recrystallization and precipitation.
Claim 4
Dependent Claim
34 words
A process as set forth in claim 1 wherein the alloy has a percentage composition represented by a point within the area included by the line ABCDEFGA on FIG. 1 of the accompanying drawing.
Claim 5
Dependent Claim
18 words
A process as set forth in claim 5 wherein the alloy contains 8 percent to 40 percent nickel.
Claim 6
Dependent Claim
27 words
A process as set forth in claim 1 wherein the amount of cold working is sufficient to effect At least 60 percent reduction in cross section area.
Claim 7
Dependent Claim
77 words
A process as set forth in claim 6 which also comprises solution heat-treating the alloy in the range of 1,150* F. to 1, 300* F. prior to commencing the cold working, wherein the amount of cold working is sufficient to effect at least 80 percent reduction in cross section area and wherein the heating of the cold-worked alloy to recrystallize the alpha-phase and simultaneously precipitate beta-phase particles is in the range of 750* F. to 1,050* F.
References Cited (Backward Citations)
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US2101087A
Cited
US2101625A
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US2101626A
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US3005702A
Cited
US3046166A
Cited
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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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |