US4016010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of high strength copper base alloy
Assignee: Olin Corp
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Filing: 1976-02-06
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Granted: 1977-04-05
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Expires: 1996-02-06
Abstract
Abstract Spinodal, precipitation hardened copper base alloy is prepared having high strength and favorable strength to ductility characteristics. The alloy consists essentially of from 10 to 30% nickel, 1 to 5% aluminum and the balance essentially copper. The microstructure of the alloy is characterized by including finely dispersed precipitates of Ni3Al particles dispersed throughout the alloy matrix.
Inventors
- 👤 Ronald N. Caron
- 👤 Stanley Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:50
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
116 words
A method for obtaining a spinodal, precipitation hardened copper base alloy having high strength and favorable strength to ductility characteristics which comprises: A. providing a copper base alloy consisting essentially of from 10 to 30% nickel, from 1 to 5% aluminum, balance copper; B. hot working said alloy with a finishing temperature in excess of 400° C; C. solution annealing said alloy for from 10 seconds to 24 hours at a temperature of from 650° to 1100° C; and D. cooling the alloy to room temperature to provide a spinodal, precipitation hardened copper base alloy wherein the microstructure is characterized by the presence of finely dispersed precipitates of Ni 3 Al particles dispersed throughout the matrix.
Claim 2
Independent Claim
116 words
A method for obtaining a spinodal, precipitation hardened copper base alloy having high strength and favorable strength to ductility characteristics which comprises: A. providing a copper base alloy consisting essentially of from 10 to 30% nickel, from 1 to 5% aluminum, balance copper; B. hot working said alloy with a finishing temperature in excess of 400° C; C. solution annealing said alloy for from 10 seconds to 24 hours at a temperature of from 650° to 1100° C; and D. cooling the alloy to room temperature to provide a spinodal, precipitation hardened copper base alloy wherein the microstructure is characterized by the presence of finely dispersed precipitates of Ni 3 Al particles dispersed throughout the matrix.
Claim 3
Dependent Claim
72 words
A method according to claim 1 wherein said alloy includes a total of up to 20% of a material selected from the group consisting of from 0.01 to 10% zinc, from 0.01 to 10% iron, from 0.01 to 10% tin, from 0.01 to 5% each of titanium, zirconium, beryllium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten and mixtures thereof, and wherein the resultant microstructure is characterized by the presence of second precipitate particles.
Claim 4
Dependent Claim
54 words
A method according to claim 1 wherein said alloy includes a total of up to 5% of a material selected from the group consisting of lead, arsenic, antimony, boron, phosphorus, manganese, silicon, a lanthanide metal, magnesium, lithium and mixtures thereof, with each of said materials being present in an amount from 0.001 to 3%.
Claim 5
Dependent Claim
33 words
A method according to claim 1 wherein said alloy is homogenized prior to hot working at a temperature between 600° C and the solidus temperature of the alloy for at least 15 minutes.
Claim 6
Dependent Claim
19 words
A method according to claim 1 wherein said alloy is cold worked following hot working but before solution annealing.
Claim 7
Dependent Claim
12 words
A method according to claim 5 wherein all working steps are rolling.
Claim 8
Dependent Claim
34 words
A method according to claim 6 wherein said alloy is cold rolled with intermediate annealing at from 250° C to within 50° C of the solidus temperature for from 10 seconds to 24 hours.
Claim 9
Dependent Claim
15 words
A method according to claim 1 wherein said alloy is water quenched following solution annealing.
Claim 10
Dependent Claim
29 words
A method according to claim 8 wherein the alloy is aged following quenching at a temperature of from 250° to 650° C for from 30 minutes to 24 hours.
Claim 11
Dependent Claim
16 words
A method according to claim 9 wherein the alloy is cold rolled and aged following quenching.
Claim 12
Dependent Claim
15 words
A method according to claim 1 wherein the alloy is slowly cooled following solution annealing.
Claim 13
Dependent Claim
30 words
A method according to claim 11 wherein the alloy is aged following slowly cooling at a temperature of from 250° to 650° C for from 30 minutes to 24 hours.
Claim 14
Dependent Claim
17 words
A method according to claim 12 wherein the alloy is cold rolled and aged following slowly cooling.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |