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US4832734A
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Hot working aluminum-base alloys
Assignee: Huntington Alloys Corp
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Filing: 1988-05-06
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Granted: 1989-05-23
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Expires: 2008-05-06
Abstract
Abstract Discloses hot working by rolling or forging of mechanically alloyed aluminum-base alloys containing 5 to 35 volume percent of an aluminum transition metal intermetallic phase, e.g. Al 3 Ti which is insoluble in the solid aluminum matrix. Hot working is carried out at a temperature above about 370° C.
Inventors
- 👤 Raymond C. Benn
- 👤 Prakash K. Mirchandani
- 👤 Walter E. Mattson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:47
CPC Classifications
C; C22; C22C; C22C21/00; C22F; C22F1/00; C22F1/04; B; B22; B22F; B22F3/00; B22F3/12; B22F3/14; C22C32/00; C22C32/0047; C22C32/0052
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
Hot working, by a process permitting metal flow in at least two directions, of a consolidated mechanically alloyed aluminum-base alloy consisting essentially of a matrix of aluminum containing optional solid solution hardeners, about 5-35% by volume of an aluminum transition metal intermetallic phase containing at least one metal of the group consisting of manganese, chromium, vanadium, iron, nickel, cobalt, niobium, tantalum and titanium essentially insoluble in the matrix below the solidus temperature of the matrix, optional carbide phases consisting principally of aluminum carbide in an amount up to about 14 volume percent and up to about 5 volume percent of oxidic phase, said hot working being conducted in the temperature interval between 370° C. and the solidus temperature of the aluminum matrix.
Claim 2
Dependent Claim
122 words
Hot working, by a process permitting metal flow in at least two directions, of a consolidated mechanically alloyed aluminum-base alloy consisting essentially of a matrix of aluminum containing optional solid solution hardeners, about 5-35% by volume of an aluminum transition metal intermetallic phase containing at least one metal of the group consisting of manganese, chromium, vanadium, iron, nickel, cobalt, niobium, tantalum and titanium essentially insoluble in the matrix below the solidus temperature of the matrix, optional carbide phases consisting principally of aluminum carbide in an amount up to about 14 volume percent and up to about 5 volume percent of oxidic phase, said hot working being conducted in the temperature interval between 370° C. and the solidus temperature of the aluminum matrix.
Claim 3
Dependent Claim
33 words
Hot working as in claim 1 wherein said aluminum transition metal intermetallic phase in the alloy being worked is principally Al 3 Ti in an amount of at least about 15 volume percent.
Claim 4
Dependent Claim
30 words
Hot working as in claim 2 wherein said aluminum transition metal intermetallic phase contains at least one metal from the group of manganese, chromium, vanadium, nickel, cobalt, niobium and molybdenum.
Claim 5
Dependent Claim
18 words
Hot working as in claim 2 carried out in the temperature range of 400° C. to 510° C.
Claim 6
Dependent Claim
8 words
Hot working as in claim 4 by rolling.
Claim 7
Dependent Claim
11 words
A hot worked object produced by the process of claim 1.
References Cited (Backward Citations)
US3874938A
Cited
US3740210A
Cited
US4292079A
Cited
US4297136A
Cited
US4600556A
Cited
US4722751A
Cited
US4668470A
Cited
US4668282A
Cited
US4624705A
Cited
US4688282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |