US4879095A
Expired / Lapsed
US
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Rapidly solidified aluminum based silicon containing, alloys for elevated temperature applications
Assignee: Honeywell International Inc
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Filing: 1987-04-17
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Granted: 1989-11-07
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Expires: 2007-04-17
Abstract
Abstract A rapidly solidified aluminum-base alloy consists essentially of the formula AlbalFeaSibVc, wherein "a" ranges from 3.0 to 7.1 atom percent, "b" ranges from 1.0 to 3.0 atom percent, "c" ranges from 0.25 to 1.25 atom percent and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V): Si ranges from about 2.33:1 to 3:33:1 and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1. The alloy exhibits high strength, ductility and fracture toughness and is especially suited for use in high temperature structural applications such as gas turbine engines, missiles, airframes and landing wheels.
Inventors
- 👤 Colin M. Adam
- 👤 Richard L. Bye
- 👤 Santosh K. Das
- 👤 David J. Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:17
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/002; B22F9/008; C; C22; C22C; C22C45/00; C22C45/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
76 words
A rapidly solidified aluminum-base alloy consisting essentially of the formula Al bal Fe a Si b V c , wherein "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1.
Claim 2
Dependent Claim
76 words
A rapidly solidified aluminum-base alloy consisting essentially of the formula Al bal Fe a Si b V c , wherein "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1.
Claim 3
Dependent Claim
40 words
A method for making a rapidly solidified aluminum-based alloy, comprising the steps of: (a) forming a melt of the alloy recited in claim 1; and (b) quenching the melt at a cooling rate of at least 10 5 ° C./sec.
Claim 4
Independent Claim
104 words
A method for forming a consolidated metal alloy article wherein particles composed of an aluminum-base alloy consisting essentially of the formula Al bal Fe a Si b V c , wherein "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1 are heated in a vacuum to a temperature ranging from about 300° to 500° C. and compacted.
Claim 5
Independent Claim
104 words
A method for forming a consolidated metal alloy article wherein particles composed of an aluminum-base alloy consisting essentially of the formula Al bal Fe a Si b V c , wherein "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1 are heated in a vacuum to a temperature ranging from about 300° to 500° C. and compacted.
Claim 6
Dependent Claim
24 words
A method as recited in claim 3, wherein said heating step comprises heating said particles to a temperature ranging from 325° to 450° C.
Claim 7
Independent Claim
128 words
A method for forming a consolidated metal alloy article wherein: (a) particles composed of an aluminum-base alloy consisting essentially of the formula Al bal Fe a Si b V c , wherein "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1 are placed in a container, heated to a temperature ranging from about 300° to 500° C., evacuated and sealed under vacuum, and (b) said container and contents are heated to a temperature ranging from 300° to 500° C. and compacted.
Claim 8
Independent Claim
128 words
A method for forming a consolidated metal alloy article wherein: (a) particles composed of an aluminum-base alloy consisting essentially of the formula Al bal Fe a Si b V c , wherein "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1 are placed in a container, heated to a temperature ranging from about 300° to 500° C., evacuated and sealed under vacuum, and (b) said container and contents are heated to a temperature ranging from 300° to 500° C. and compacted.
Claim 9
Dependent Claim
27 words
A method as recited in claim 5, wherein said heating step comprises heating said container and contents to a temperature ranging from 325° C. to 450° C.
Claim 10
Dependent Claim
117 words
A consolidated metal article compacted from particles of an aluminum base alloy consisting essentially of the formula Al bal Fe a Si b V c , "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1 said consolidated article being composed of an aluminum solid solution phase containing therein a substantially uniform distribution of dispersed, intermetallic phase precipitates, each said precipitates measuring less than about 100 nm. in any dimension thereof.
Claim 11
Dependent Claim
117 words
A consolidated metal article compacted from particles of an aluminum base alloy consisting essentially of the formula Al bal Fe a Si b V c , "a" ranges from 3.0 to 7.1 at %, "b" ranges from 1.0 to 3.0 at %, "c" ranges from 0.25 to 1.25 at % and the balance is aluminum plus incidental impurities, with the provisos that (i) the ratio (Fe+V):Si ranges from about 2.33:1 to 3.33:1, and (ii) the ratio Fe:V ranges from 11.5:1 to 5:1 said consolidated article being composed of an aluminum solid solution phase containing therein a substantially uniform distribution of dispersed, intermetallic phase precipitates, each said precipitates measuring less than about 100 nm. in any dimension thereof.
Claim 12
Dependent Claim
32 words
A consolidated metal article as recited in claim 7, wherein said article has the form of a sheet having a width of at least 0.5" and a thickness of at least 0.010".
Claim 13
Dependent Claim
43 words
A consolidated metal article as recited in claim 8, wherein said particles of aluminum-base alloy are compacted at a temperature of about 400° to 550° C. and each of the said dispersed intermetallic precipitates measures less than 100 nm. in any dimension thereof.
Claim 14
Dependent Claim
24 words
A consolidated metal article as recited in claim 7, wherein the volume fraction of said fine intermetallic precipitates ranges from about 16 to 45%.
Claim 15
Dependent Claim
23 words
A consolidated metal article as recited in claim 7, wherein said article is compacted by forging without substantial loss of its mechanical properties.
Claim 16
Dependent Claim
22 words
A consolidated metal article as recited in claim 7, wherein said article is compacted by extruding through a die into bulk shapes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |