US4734130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing rapidly solidified aluminum-transition metal-silicon alloys
Assignee: Honeywell International Inc
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Filing: 1984-08-10
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Granted: 1988-03-29
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Expires: 2004-08-10
Abstract
Abstract The present invention provides a method for producing an aluminum alloy which includes the step of carbothermically reducing an aluminous material to provide an alloy consisting essentially of the formula AlbalTMdSie, wherein TM is at least one element selected from the group consisting of Fe, Ni, Co, Ti, V, Zr, Cu and Mn, "d" ranges from about 2-20 wt %, "e" ranges from about 2.1-20 wt %, and the balance is aluminum and incidental impurities. The alloy is placed in the molten state and rapidly solidified at a quench rate of at least about 106K/sec to produce a rapidly solidified alloy composed of a predominately microeutectic and/or microcellular structure.
Inventors
- 👤 Colin M. Adam
- 👤 Kenji Okazaki
- 👤 David J. Skinner
- 👤 Robert G. Corey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:11
CPC Classifications
C; C22; C22C; C22C45/00; C22C45/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
142 words
A method for producing aluminum alloy, comprising the steps of: (a) a carbothermically reducing an aluminous material containing oxides of Al, Si, and transition metals to provide a reduced material; (b) producing with said reduced material an alloy consisting essentially of the formula Al bal TM d Si e , wherein "TM" is at least one element selected from the group consisting of Fe Co, Ti, V, Ni, Zr, Cu, Mg and Mn, "d" ranges from about 2-20 wt %, "e" ranges from about 2.1-20 wt % and the balance is aluminum and incidental impurities; (c) placing said alloy in the molten state; and (d) rapidly solidifying said alloy at a quench rate of at least about 10 6 K/sec to produce a rapidly solidified alloy in which the microstructure is at least about 50% composed of a microeutectic and/or microcellular structure.
Claim 2
Independent Claim
142 words
A method for producing aluminum alloy, comprising the steps of: (a) a carbothermically reducing an aluminous material containing oxides of Al, Si, and transition metals to provide a reduced material; (b) producing with said reduced material an alloy consisting essentially of the formula Al bal TM d Si e , wherein "TM" is at least one element selected from the group consisting of Fe Co, Ti, V, Ni, Zr, Cu, Mg and Mn, "d" ranges from about 2-20 wt %, "e" ranges from about 2.1-20 wt % and the balance is aluminum and incidental impurities; (c) placing said alloy in the molten state; and (d) rapidly solidifying said alloy at a quench rate of at least about 10 6 K/sec to produce a rapidly solidified alloy in which the microstructure is at least about 50% composed of a microeutectic and/or microcellular structure.
Claim 3
Dependent Claim
28 words
A method as recited in claim 1, wherein said alloy is produced by adding selected amounts of Al, Si and TM group elements to said carbothermically reduced material.
Claim 4
Dependent Claim
13 words
A method as recited in claim 1, wherein said aluminous material is bauxite.
Claim 5
Dependent Claim
33 words
A method as recited in claim 1, wherein said solidifying step (d) produces a rapidly solidified alloy in which the microstructure is at least about 90% composed of a microeutectic and/or microcellular structure.
Claim 6
Dependent Claim
31 words
A method as recited in claim 1, wherein said solidifying step (d) produces a rapidly solidifed alloy in which the microstructure is approximately 100% composed of a microeutectic and/or microcellular structure.
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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) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |