US4597792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-based composite product of high strength and toughness
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1985-06-10
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Granted: 1986-07-01
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Expires: 2005-06-10
Abstract
Abstract High strength and high toughness are combined in an aluminum-based metallic product by dispersing particles of an aluminum-based metal having a toughness of at least about 20 foot-pounds through a matrix of aluminum-based metal having a yield strength of at least about 30 ksi.
Inventors
- 👤 Donald Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:07
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/0408; C22C1/0416; B; B22; B22F; B22F1/00; B22F1/09; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
39 words
An aluminum-based metallic product comprised of a first aluminum-based metal having a yield strength of at least about 30 ksi, having dispersed therein particles of a second aluminum-based metal having an impact toughness of at least about 20 foot-pounds.
Claim 2
Dependent Claim
39 words
An aluminum-based metallic product comprised of a first aluminum-based metal having a yield strength of at least about 30 ksi, having dispersed therein particles of a second aluminum-based metal having an impact toughness of at least about 20 foot-pounds.
Claim 3
Dependent Claim
22 words
An aluminum-based metallic product in accordance with claim 1 in which said second aluminum-based metal is at least about 99.5% pure aluminum.
Claim 4
Dependent Claim
37 words
An aluminum-based metallic product in accordance with claim 1 in which said first aluminum-based metal is an alloy containing a member selected from the group consisting of lithium, copper, zinc and magnesium as a primary alloying element.
Claim 5
Dependent Claim
25 words
An aluminum-based metallic product in accordance with claim 1 in which said first aluminum-based metal is an alloy containing lithium as a primary alloying element.
Claim 6
Dependent Claim
27 words
An aluminum-based metallic product in accordance with claim 1 in which said second aluminum-based metal comprises from about 2% to about 40% by weight of said product.
Claim 7
Dependent Claim
27 words
An aluminum-based metallic product in accordance with claim 1 in which said second aluminum-based metal comprises from about 5% to about 25% by weight of said product.
Claim 8
Dependent Claim
38 words
An aluminum-based metallic product in accordance with calim 1 in which said first aluminum-based metal is an alloy containing at least about 2% lithium by weight, and said second aluminum-based metal is at least about 99.5% pure aluminum.
Claim 9
Dependent Claim
38 words
An aluminum-based metallic product in accordance with calim 1 in which said first aluminum-based metal is an alloy containing at least about 2% lithium by weight, and said second aluminum-based metal is at least about 99.5% pure aluminum.
Claim 10
Dependent Claim
24 words
An aluminum-based metallic product in accordance with claim 1 in which said particles are each about 0.0001 to about 0.01 cubic centimeters in volume.
Claim 11
Dependent Claim
25 words
An aluminum-based metallic product in accordance with claim 1 in which the yield strength of said first aluminum-based metal is at least about 50 ksi.
Claim 12
Dependent Claim
25 words
An aluminum-based metallic product in accordance with claim 1 in which the impact toughness of said second aluminum-based metal is at least about 50 foot-pounds.
Claim 13
Dependent Claim
57 words
An aluminum-based metallic product comprised of an aluminum alloy containing at least about 2% lithium by weight, and having dispersed therein particles of at least about 99.5% pure aluminum, said particles each having a volume of about 0.0001 to about 0.01 cubic centimeters and collectively comprising from about 2% to about 25% by weight of said product.
Claim 14
Dependent Claim
57 words
An aluminum-based metallic product comprised of an aluminum alloy containing at least about 2% lithium by weight, and having dispersed therein particles of at least about 99.5% pure aluminum, said particles each having a volume of about 0.0001 to about 0.01 cubic centimeters and collectively comprising from about 2% to about 25% by weight of said product.
Claim 15
Independent Claim
58 words
A method for preparing an aluminum-based metallic product, comprising: (a) blending a first powered aluminum-based metal having a yield strength of at least about 30 ksi with a second powdered aluminum-based metal having an impact toughness of at least about 20 foot-pounds to form a substantially uniform powder mixture; and (b) consolidating said powder mixture into a billet.
Claim 16
Independent Claim
58 words
A method for preparing an aluminum-based metallic product, comprising: (a) blending a first powered aluminum-based metal having a yield strength of at least about 30 ksi with a second powdered aluminum-based metal having an impact toughness of at least about 20 foot-pounds to form a substantially uniform powder mixture; and (b) consolidating said powder mixture into a billet.
Claim 17
Dependent Claim
30 words
A method in accordance with claim 12 in which said first and second powdered aluminum-based metals each have particle sizes ranging from about 10 to about 1000 microns in diameter.
Claim 18
Dependent Claim
30 words
A method in accordance with claim 12 in which said first and second powdered aluminum-based metals each have particles sizes ranging from about 50 to about 500 microns in diameter.
Claim 19
Dependent Claim
21 words
A method in accordance with claim 12 in which said second powdered aluminum-based metal is at least about 99.5% pure aluminum.
Claim 20
Dependent Claim
36 words
A method in accordance with claim 12 in which said first powdered aluminum-based metal is an alloy containing a member selected from the group consisting of lithium, copper, zinc and magnesium as a primary alloying element.
Claim 21
Dependent Claim
38 words
A method in accordance with claim 12 in which said first powdered aluminum-based metal is an alloy containing at least about 2% lithium by weight, and said second powdered aluminum-based metal is at least about 99.5% pure aluminum.
Claim 22
Dependent Claim
26 words
A method in accordance with claim 12 in which said second powdered aluminum-based metal comprises from about 2% to about 40% by weight of said product.
Claim 23
Dependent Claim
26 words
A method in accordance with claim 12 in which said second powdered aluminum-based metal comprises from about 5% to about 25% by weight of said product.
Claim 24
Dependent Claim
24 words
A method in accordance with claim 12 in which the yield strength of said first powdered aluminum-based metal is at least about 50 ksi.
Claim 25
Dependent Claim
24 words
A method in accordance with claim 12 in which the impact toughness of said second powdered aluminum-based metal is at least about 50 foot-pounds.
Claim 26
Dependent Claim
24 words
A method in accordance with claim 12 further comprising removing substantially all bound water from the surface of the particles in said powder mixture.
Claim 27
Dependent Claim
29 words
A method in accordance with claim 12 further comprising purging said powder mixture with an inert gas to remove substantially all bound water from the surface of said particles.
Claim 28
Dependent Claim
23 words
A method in accordance with claim 12 in which step (b) comprises compacting said powder mixture to at least about 85% full density.
Claim 29
Dependent Claim
23 words
A method in accordance with claim 12 in which step (b) comprises compacting said powder mixture to at least about 95% full density.
Claim 30
Independent Claim
89 words
A method for preparing an aluminum-based metallic product, comprising: (a) blending a powdered aluminum-based alloy containing at least about 2% lithium by weight and having a particle size of about 10 to about 1000 microns in diameter, with powdered aluminum which is at least about 99.5% pure and has a particle size of about 10 to about 1000 microns to form a substantially uniform powder mixture of which said powdered aluminum comprises from about 5% to about 25% by weight; and (b) consolidating said powder mixture into a billet.
Claim 31
Independent Claim
89 words
A method for preparing an aluminum-based metallic product, comprising: (a) blending a powdered aluminum-based alloy containing at least about 2% lithium by weight and having a particle size of about 10 to about 1000 microns in diameter, with powdered aluminum which is at least about 99.5% pure and has a particle size of about 10 to about 1000 microns to form a substantially uniform powder mixture of which said powdered aluminum comprises from about 5% to about 25% by weight; and (b) consolidating said powder mixture into a billet.
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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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |