US4915905A
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US
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Process for rapid solidification of intermetallic-second phase composites
Assignee: Lockheed Martin Corp
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Filing: 1988-09-26
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Granted: 1990-04-10
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Expires: 2008-09-26
Abstract
Abstract This invention relates to a process for making in-situ precipitated second phase in an intermetallic matrix, which composite is rapidly solidified to form a product. The invention also relates to a rapidly solidified product comprising a second phase in both a stable particulate form and a metastable flake form dispersed in an intermetallic matrix.
Inventors
- 👤 Stephen L. Kampe
- 👤 John M. Brupbacher
- 👤 Leontios Christodoulou
- 👤 Dennis C. Nagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:51
CPC Classifications
C; C22; C22C; C22C49/00; C22C49/14; B; B22; B22F; B22F3/00; B22F3/23; B22F9/00; B22F9/02; B22F9/14; B82; B82Y; B82Y30/00; C22C1/00; C22C1/10; C22C1/1036; C22C1/1047; C22C32/00; C22C32/0047; C22C32/0078
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
80 words
A method for the preparation of intermetallic-second phase composite materials, said method comprising: contacting reactive precursors of a second phase material and a solvent matrix material comprising an intermetallic or precursors thereof at a temperature sufficient to initiate the exothermic reaction of said second phase precursors to thereby form the second phase within said solvent matrix material; recovering a composite comprising an intermetallic containing matrix having particles of said second phase dispersed therein; and subjecting said composite to rapid solidification.
Claim 2
Independent Claim
80 words
A method for the preparation of intermetallic-second phase composite materials, said method comprising: contacting reactive precursors of a second phase material and a solvent matrix material comprising an intermetallic or precursors thereof at a temperature sufficient to initiate the exothermic reaction of said second phase precursors to thereby form the second phase within said solvent matrix material; recovering a composite comprising an intermetallic containing matrix having particles of said second phase dispersed therein; and subjecting said composite to rapid solidification.
Claim 3
Dependent Claim
58 words
A method as set forth in claim 1, wherein said reactive precursors of said intermetallic are selected from the group consisting of aluminum, nickel, copper, titanium, cobalt, iron, platinum, gold, silver, niobium, tantalum, boron, lead, zinc, molybdenum, yttrium, hafnium, tin, tungsten, lithium, magnesium, beryllium, thorium, silicon, chromium, vanadium, zirconium, manganese, scandium, lanthanum, rare earth elements, and alloys thereof.
Claim 4
Dependent Claim
21 words
A method as set forth in claim 2, wherein said second phase comprises an intermetallic material other than the matrix intermetallic.
Claim 5
Dependent Claim
15 words
A method as set forth in claim 1, wherein said second phase comprises a ceramic.
Claim 6
Dependent Claim
33 words
A method as set forth in claim 1, wherein at least one reactive precursor of said second phase material is a transition metal of the third to sixth group of the Periodic Table.
Claim 7
Dependent Claim
57 words
A method as set forth in claim 1, wherein at least one second phase precursor is selected from the group consisting of aluminum, titanium, silicon, boron, carbon, sulfur, molybdenum, tungsten, vanadium, zirconium, niobium, cobalt, nitrogen, oxygen, nickel, iron, magnesium, beryllium, manganese, zinc, lithium, yttrium, hafnium, tantalum, chromium, thorium, refractory metals, rare earth metals, and reactive compounds thereof.
Claim 8
Dependent Claim
29 words
A method as set forth in claim 6, wherein at least one intermetallic precursor is selected from the group consisting of aluminum, nickel, titanium, cobalt, iron, and refractory metals.
Claim 9
Dependent Claim
29 words
A method as set forth in claim 7, wherein said second phase precursors are selected from the group consisting of titanium, zirconium, hafnium, boron, silicon, oxygen, nitrogen, and carbon.
Claim 10
Dependent Claim
15 words
A method as set forth in claim 8, wherein the intermetallic is Ti 3 Al.
Claim 11
Dependent Claim
17 words
A method as set forth in claim 9, wherein the second phase precursors are titanium and boron.
Claim 12
Dependent Claim
13 words
A method as set forth in claim 8, wherein the intermetallic is TiAl.
Claim 13
Dependent Claim
17 words
A method as set forth in claim 11, wherein the second phase precursors are titanium and boron.
Claim 14
Dependent Claim
15 words
A method as set forth in claim 8, wherein the intermetallic is TiAl 3 .
Claim 15
Dependent Claim
17 words
A method as set forth in claim 13, wherein the second phase precursors are titanium and boron.
Claim 16
Dependent Claim
13 words
A method as set forth in claim 8, wherein the intermetallic is NiAl.
Claim 17
Dependent Claim
15 words
A method as set forth in claim 8, wherein the intermetallic is Ni 3 Al.
Claim 18
Dependent Claim
17 words
A method as set forth in claim 16, wherein the second phase precursors are titanium and boron.
Claim 19
Dependent Claim
17 words
A method as set forth in claim 16, wherein the second phase precursors are zirconium and carbon.
Claim 20
Dependent Claim
17 words
A method as set forth in claim 16, wherein the second phase precursors are zirconium and boron.
Claim 21
Dependent Claim
15 words
A method as set forth in claim 1, wherein plural second phase materials are produced.
Claim 22
Dependent Claim
21 words
A method as set forth in claim 20, wherein one of said second phase materials is an oxide or a nitride.
Claim 23
Dependent Claim
23 words
A method as set forth in claim 21, wherein said oxide is an oxide of yttrium, cerium, erbium, or a rare earth element.
Claim 24
Dependent Claim
19 words
A method as set forth in claim 1, wherein said inermetallic containing matrix comprises a mixture of intermetallic materials.
Claim 25
Independent Claim
120 words
A method for the production of intermetallic-second phase composite materials containing a second phase, said method comprising precipitating at least one second phase material in an intermetallic matrix by contacting reactive second phase forming constituents, in the presence of a substantially non-reactive solvent matrix material in which the second phase forming constituents are more soluble than the second phase, at a temperature at which reaction of the reactive second phase forming constituents occurs, to precipitate the second phase in the solvent matrix material, rapidly quenching the intermetallic-second phase composite material at a rate in the range of approximately 10 4 ° C. per second to 10 8 ° C. per second, and recovering a rapidly solidified intermetallic-second phase composite material.
Claim 26
Independent Claim
120 words
A method for the production of intermetallic-second phase composite materials containing a second phase, said method comprising precipitating at least one second phase material in an intermetallic matrix by contacting reactive second phase forming constituents, in the presence of a substantially non-reactive solvent matrix material in which the second phase forming constituents are more soluble than the second phase, at a temperature at which reaction of the reactive second phase forming constituents occurs, to precipitate the second phase in the solvent matrix material, rapidly quenching the intermetallic-second phase composite material at a rate in the range of approximately 10 4 ° C. per second to 10 8 ° C. per second, and recovering a rapidly solidified intermetallic-second phase composite material.
Claim 27
Dependent Claim
23 words
The method of claim 24, wherein the rapid quenching is accomplished by depositing the metal-second phase material against a rapidly moving quench surface.
Claim 28
Dependent Claim
20 words
The method of claim 24, wherein the rapid quenching is accomplished by atomizing the metal-second phase material to form droplets.
Claim 29
Dependent Claim
14 words
The method of claim 26, wherein said droplets are subjected to a coolant shower.
Claim 30
Dependent Claim
14 words
The method of claim 26, wherein said droplets are deposited in a cooling bath.
Claim 31
Dependent Claim
15 words
The method of claim 24, wherein the second phase comprises both particulate and flake ceramic.
Claim 32
Dependent Claim
27 words
The method of claim 29, wherein the second phase is selected from the group consisting of titanium diboride, zirconium diboride, zirconium disilicide, titanium oxide, and titanium nitride.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |