US5122339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-lithium welding alloys
Assignee: Rio Tinto Aluminium Ltd
•
Filing: 1990-02-22
•
Granted: 1992-06-16
•
Expires: 2010-02-22
Abstract
Abstract Welding alloys based upon aluminum, copper, mangesium, silver and lithium have been found to possess exceptional properties such as resistance to hot cracking, high strength and ductility, and an unexpected natural aging response. The aluminum-base alloys may contain 3.5 to 7 weight percent Cu, 0.05 to 1.5 weight percent Mg, 0.01 to 2 weight percent Ag, 0.1 to 4 weight percent Li, and 0.01 to 2 weight percent grain refiner.
Inventors
- 👤 Joseph R. Pickens
- 👤 Frank H. Heubaum
- 👤 Lawrence S. Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:30
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; C; C22; C22C; C22C21/00; C22C21/12
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 3.5 to about 7 weight percent Cu, from about 0.05 to about 1.5 weight percent Mg, from about 0.01 to about 2 weight percent Ag, from about 0.1 to about 4 weight percent Li, from about 0.01 to about 2 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 2
Dependent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 3.5 to about 7 weight percent Cu, from about 0.05 to about 1.5 weight percent Mg, from about 0.01 to about 2 weight percent Ag, from about 0.1 to about 4 weight percent Li, from about 0.01 to about 2 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 3
Dependent Claim
20 words
A welding alloy according to claim 1, wherein the grain refiner is selected from Zr, Ti, or a combination thereof.
Claim 4
Dependent Claim
19 words
A welding alloy according to claim 1, wherein the Cu comprises from about 4 to about 6.5 weight percent.
Claim 5
Dependent Claim
19 words
A welding alloy according to claim 1, wherein the Mg comprises from about 0.05 to about 1 weight percent.
Claim 6
Dependent Claim
19 words
A welding alloy according to claim 1, wherein the Ag comprises from about 0.05 to about 1.2 weight percent.
Claim 7
Dependent Claim
19 words
A welding alloy according to claim 1, wherein the Li comprises from about 0.5 to about 2.6 weight percent.
Claim 8
Dependent Claim
20 words
A welding alloy according to claim 1, wherein the grain refiner comprises from about 0.05 to about 1 weight percent.
Claim 9
Dependent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 4 to about 6.5 weight percent Cu, from about 0.05 to about 1 weight percent Mg, from about 0.05 to about 1.2 weight percent Ag, from about 0.5 to about 2.6 weight percent Li, from about 0.05 to about 1 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 10
Dependent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 4 to about 6.5 weight percent Cu, from about 0.05 to about 1 weight percent Mg, from about 0.05 to about 1.2 weight percent Ag, from about 0.5 to about 2.6 weight percent Li, from about 0.05 to about 1 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 11
Dependent Claim
20 words
A welding alloy according to claim 8, wherein the grain refiner is selected from Zr, Ti, or a combination thereof.
Claim 12
Dependent Claim
19 words
A welding alloy according to claim 8, wherein the Cu comprises from about 4.5 to about 5.5 weight percent.
Claim 13
Dependent Claim
19 words
A welding alloy according to claim 8, wherein the Mg comprises from about 0.1 to about 0.8 weight percent.
Claim 14
Dependent Claim
19 words
A welding alloy according to claim 8, wherein the Ag comprises from about 0.1 to about 1 weight percent.
Claim 15
Dependent Claim
19 words
A welding alloy according to claim 8, wherein the Li comprises from about 0.8 to about 1.8 weight percent.
Claim 16
Dependent Claim
20 words
A welding alloy according to claim 8, wherein the grain refiner comprises from about 0.05 to about 0.5 weight percent.
Claim 17
Dependent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 4.5 to about 5.5 weight percent Cu, from about 0.1 to about 0.8 weight percent Mg, from about 0.1 to about 1 weight percent Ag, from about 0.8 to about 1.8 weight percent Li, from about 0.05 to about 0.5 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 18
Dependent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 4.5 to about 5.5 weight percent Cu, from about 0.1 to about 0.8 weight percent Mg, from about 0.1 to about 1 weight percent Ag, from about 0.8 to about 1.8 weight percent Li, from about 0.05 to about 0.5 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 19
Dependent Claim
20 words
A welding alloy according to claim 15, wherein the grain refiner is selected from Zr, Ti, or a combination thereof.
Claim 20
Dependent Claim
19 words
A welding alloy according to claim 15, wherein the Cu comprises from about 4.8 to about 5.2 weight percent.
Claim 21
Dependent Claim
19 words
A welding alloy according to claim 15, wherein the Mg comprises from about 0.2 to about 0.5 weight percent.
Claim 22
Dependent Claim
19 words
A welding alloy according to claim 15, wherein the Ag comprises from about 0.3 to about 0.5 weight percent.
Claim 23
Dependent Claim
19 words
A welding alloy according to claim 15, wherein the Li comprises from about 1.0 to about 1.6 weight percent.
Claim 24
Dependent Claim
20 words
A welding alloy according to claim 15, wherein the grain refiner comprises from about 0.08 to about 0.2 weight percent.
Claim 25
Dependent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 4.8 to about 5.2 weight percent Cu, from about 0.2 to about 0.5 weight percent Mg, from about 0.3 to about 0.5 weight percent Ag, from about 1.0 to about 1.6 weight percent Li, from about 0.08 to about 0.2 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 26
Dependent Claim
84 words
A welding alloy for welding aluminum-base alloys, the welding alloy consisting essentially of from about 4.8 to about 5.2 weight percent Cu, from about 0.2 to about 0.5 weight percent Mg, from about 0.3 to about 0.5 weight percent Ag, from about 1.0 to about 1.6 weight percent Li, from about 0.08 to about 0.2 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 27
Dependent Claim
20 words
A welding alloy according to claim 22, wherein the grain refiner is selected from Zr, Ti, or a combination thereof.
Claim 28
Dependent Claim
80 words
A weld wire having a composition consisting essentially of from about 3.5 to about 7 weight percent Cu, from about 0.05 to about 1.5 weight percent Mg, from about 0.01 to about 2 weight percent Ag, from about 0.1 to about 4 weight percent Li, from about 0.01 to about 2 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 29
Dependent Claim
80 words
A weld wire having a composition consisting essentially of from about 3.5 to about 7 weight percent Cu, from about 0.05 to about 1.5 weight percent Mg, from about 0.01 to about 2 weight percent Ag, from about 0.1 to about 4 weight percent Li, from about 0.01 to about 2 weight percent grain refiner selected from the group consisting of Zr, Cr, Mn, Ti, B, V, Hf, TiB 2 and combinations thereof, and the balance aluminum and incidental impurities.
Claim 30
Dependent Claim
54 words
A weld wire according to claim 24, wherein the Cu comprises from about 4 to about 6.5 weight percent, the Mg comprises from about 0.05 to about 1 weight percent, the Ag comprises from about 0.05 to about 1.2 weight percent, the Li comprises from about 0.5 to about to about 1 weight percent.
Claim 31
Dependent Claim
65 words
A weld wire according to claim 24, wherein the Cu comprises from about 4.5 to about 5.5 weight percent, the Mg comprises from about 0.1 to about 0.8 weight percent, the Ag comprises from about 0.1 to about 1 weight percent, the Li comprises from about 0.8 to about 1.8 weight percent, and the grain refiner comprises from about 0.05 to about 0.5 weight percent.
Claim 32
Dependent Claim
65 words
A weld wire according to claim 24, wherein the Cu comprises from about 4.8 to about 5.2 weight percent, the Mg comprises from about 0.2 to about 0.5 weight percent, the Ag comprises from about 0.3 to about 0.5 weight percent, the Li comprises from about 1.0 to about 1.6 weight percent, and the grain refiner comprises from about 0.08 to about 0.2 weight percent.
Claim 33
Dependent Claim
18 words
A weld wire according to claim 24, wherein the grain refiner comprises Zr, Ti, or a combination thereof.
References Cited (Backward Citations)
CA863262A
Cited
US1620082A
Cited
GB353891A
Cited
US2381219A
Cited
US2915391A
Cited
US3306717A
Cited
US3346370A
Cited
US3288601A
Cited
GB1172736A
Cited
US3563730A
Cited
US3741827A
Cited
US3794531A
Cited
US3720508A
Cited
US3876474A
Cited
US4033794A
Cited
US3925067A
Cited
US4094705A
Cited
US4164434A
Cited
US4588553A
Cited
GB2115836A
Cited
US4594222A
Cited
GB2121822A
Cited
GB2137227A
Cited
US4624717A
Cited
US4626409A
Cited
US4584173A
Cited
US4758286A
Cited
US4603029A
Cited
US4735774A
Cited
US4661172A
Cited
FR2561261A1
Cited
US4629505A
Cited
US4597792A
Cited
US4772342A
Cited
US4816087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |