Patent US4732610A successfully refreshed from Google Patents.
US4732610A
Expired / Lapsed
US
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Al-Zn-Mg-Cu powder metallurgy alloy
Assignee: Alcoa Corp
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Filing: 1986-02-24
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Granted: 1988-03-22
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Expires: 2006-02-24
Abstract
Abstract Loose metal particles, or a consolidated metal particle composition, of an aluminum alloy consisting essentially of about 5 to 13% zinc, 1 to 3.5% magnesium, 0.5 to 3.0% copper, with iron being present up to 0.5%, with silicon being present up to 0.4%, plus nickel or cobalt or both being present in an amount effective essentially to place the iron in the incoherent dispersoid Al9(Fe,M)2, M being nickel or cobalt or both, M being present up to 0.75%, plus means being present for forming coherent dispersoids, said means being present up to 1%, balance aluminum.
Inventors
- 👤 Gregory J. Hildeman
- 👤 Linda C. Labarre
- 👤 David J. Brownhill
- 👤 Arshad Hafeez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:21
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/16
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
108 words
Loose metal particles of an aluminum alloy consisting essentially of about 5 to 13% zinc, 1 to 3.5% magnesium, 0.5 to 3.0% copper, with iron being present up to 0.5%, with silicon being present up to 0.4%, plus nickel or cobalt or both being present in an amount effective essentially to place the iron in the incoherent dispersoid Al 9 (Fe,M) 2 , M being nickel or cobalt or both, M being present up to 0.75%, pluls means being present for forming coherent dispersoids, said means being present up to 1%, balance aluminum, said means being at least one of the elements Zr, V, Hf, Ta, and Ti.
Claim 2
Dependent Claim
108 words
Loose metal particles of an aluminum alloy consisting essentially of about 5 to 13% zinc, 1 to 3.5% magnesium, 0.5 to 3.0% copper, with iron being present up to 0.5%, with silicon being present up to 0.4%, plus nickel or cobalt or both being present in an amount effective essentially to place the iron in the incoherent dispersoid Al 9 (Fe,M) 2 , M being nickel or cobalt or both, M being present up to 0.75%, pluls means being present for forming coherent dispersoids, said means being present up to 1%, balance aluminum, said means being at least one of the elements Zr, V, Hf, Ta, and Ti.
Claim 3
Dependent Claim
67 words
Metal particles as claimed in claim 1, which, when consolidated, exhibit in a T7 temper a combination of properties compared to 7075-T7 alloy products such that there is an improvement in fracture toughness of at least 5%, an improvement in yield strength of at least 10%, an improvement in fatigue strength at 10 5 cycles, K=3, R=0.1, of at least 10%, with equivalent or superior corrosion resistance.
Claim 4
Dependent Claim
67 words
Metal particles as claimed in claim 1, which, when consolidated, exhibit in a T7 temper a combination of properties compared to 7075-T7 alloy products such that there is an improvement in fracture toughness of at least 10%, an improvement in yield strength of at least 20%, an improvement in fatigue strength at 10 5 cycles, K=3, R=0.1, of at least 20%, with equivalent or superior corrosion resistance.
Claim 5
Dependent Claim
69 words
Metal particles as claimed in claim 1, which, when consolidated, exhibit in a T6 temper a combination of properties compared to 7075-T6 alloy products such that there is an improvement in fracture toughness of at least 5%, an improvement in yield strength of at least 10%, an improvement in fatigue strength at 10 5 cycles, K t =3, R=0.1, of at least 10%, with equivalent or superior corrosion resistance.
Claim 6
Dependent Claim
69 words
Metal particles as claimed in claim 1, which, when consolidated, exhibit in a T6 temper a combination of properties compared to 7075-T6 alloy products such that there is an improvement in fracture toughness of at least 10%, an improvement in yield strength of at least 20%, an improvement in fatigue strength at 10 5 cycles, K t =3, R=0.1, of at least 20%, with equivalent or superior corrosion resistance.
Claim 7
Dependent Claim
13 words
Metal particles as claimed in claim 1, further containing up to 1.0 oxygen.
Claim 8
Dependent Claim
15 words
Metal particles as claimed in claim 1, containing 0.05 to 0.3% total of said elements.
Claim 9
Dependent Claim
15 words
Metal particles as claimed in claim 7, containing 0.1 to 0.2% total of said elements.
Claim 10
Dependent Claim
17 words
Metal particles as claimed in claim 1, wherein the weight ratio Ni/Fe is between 0.8:1 and 4.5:1.
Claim 11
Dependent Claim
19 words
Metal particles as claimed in claim 1, iron being present up to 0.2%, silicon being present up to 0.2%.
Claim 12
Dependent Claim
19 words
Metal particles as claimed in claim 1, iron being present up to 0.1%, silicon being present up to 0.1%.
Claim 13
Dependent Claim
99 words
A consolidated alulminum alloy metal particle composition consisting essentially of about 5 to 13% zinc, 1 to 3.5% magnesium, 0.5 3.0% copper, with iron being present up to 0.5%, with silicon being present up to 0.4%, plus nickel or cobalt or both being present in an amount effective essentially to place the iron in the incoherent dispersoid Al 9 (Fe,M) 2 , M being nickel or cobalt or both, M being present up to 0.75%, plus means being present up to 1%, balance aluminum, said means being at least one of the elements Zr, V, Hf, Ta, and Ti.
Claim 14
Dependent Claim
99 words
A consolidated alulminum alloy metal particle composition consisting essentially of about 5 to 13% zinc, 1 to 3.5% magnesium, 0.5 3.0% copper, with iron being present up to 0.5%, with silicon being present up to 0.4%, plus nickel or cobalt or both being present in an amount effective essentially to place the iron in the incoherent dispersoid Al 9 (Fe,M) 2 , M being nickel or cobalt or both, M being present up to 0.75%, plus means being present up to 1%, balance aluminum, said means being at least one of the elements Zr, V, Hf, Ta, and Ti.
Claim 15
Dependent Claim
66 words
A composition as claimed in claim 12, exhibiting in a T7 temper a combination of properties compared to 7075-T7 alloy products such that there is an improvement in fracture toughness of at least 5%, an improvement in yield strength of at least 10%, an improvement in fatigue strength at 10 5 cycles, K t =3, R=0.1, of at least 10%, with equivalent or superior corrosion resistance.
Claim 16
Dependent Claim
66 words
A composition as claimed in claim 12, exhibiting in a T7 temper a combination of properties compared to 7075-T7 alloy products such that there is an improvement in fracture toughness of at least 10%, an improvement in yield strength of at least 20%, an improvement in fatigue strength at 10 5 cycles K t =3, R=0.1, of at least 20%, with equivalent or superior corrosion resistance.
Claim 17
Dependent Claim
66 words
A composition as claimed in claim 12, exhibiting in a T6 temper a combination of properties compared to 7075-T6 alloy products such that there is an improvement in fracture toughness of at least 5%, an improvement in yield strength of at least 10%, an improvement in fatigue strength at 10 5 cycles, K t =3, =0.1, of at least 10%, with equivalent or superior corrosion resistance.
Claim 18
Dependent Claim
66 words
A composition as claimed in claim 12, exhibiting in a T6 temper a combination of properties compared to 7075-T6 alloy products such that there is an improvement in fracture toughness of at least 10%, an improvement in yield strength of at least 20%, an improvement in fatigue strenght at 10 5 cycles, K t =3, R=0.1, of at least 20%, with equivalent or superior corrosion resistance.
Claim 19
Dependent Claim
13 words
A composition as claimed in claim 12, further containing up to 1.0 oxygen.
Claim 20
Dependent Claim
15 words
A composition as claimed in claim 1, containing 0.05 to 0.3% total of said elements.
Claim 21
Dependent Claim
15 words
A composition as claimed in claim 18, containing 0.1 to 0.2% total of said elements.
Claim 22
Dependent Claim
17 words
A composition as claimed in claim 12, wherein the weight ratio Ni/Fe is between 0.8:1 and 4.5:1.
Claim 23
Dependent Claim
19 words
A composition as claimed in claim 12, iron being present up to 0.2%, silicon being present up to 0.2%.
Claim 24
Dependent Claim
19 words
A composition as claimed in claim 12, iron being present up to 0.1%, silicon being present up to 0.1%.
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) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |