US4411962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induced or constrained superplastic laminates for forming
Assignee: Lockheed Martin Corp
•
Filing: 1981-12-08
•
Granted: 1983-10-25
•
Expires: 2001-12-08
Abstract
Abstract A metal laminate possessing high strength characteristics as well as good ductility and malleability, comprising one or more layers of a superplastic material metallurgically bonded to one or more layers of a non-super plastic material; and the method of preparing the laminate to induce plastic or super plastic characteristics to the nonsuper plastic material.
Inventors
- 👤 Robert M. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:46
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799; Y10T428/12861; Y10T428/12951; Y10T428/12972
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
19 words
A metal laminate comprising a layer of a superplastic metal metallurgically bonded to a layer of a non-superplastic metal.
Claim 2
Dependent Claim
19 words
A metal laminate comprising a layer of a superplastic metal metallurgically bonded to a layer of a non-superplastic metal.
Claim 3
Dependent Claim
58 words
A metal laminate comprising: (a) a first layer of a superplastic metal; (b) a second layer of a non-superplastic metal metallurgically bonded to one side of said first layer; and (c) a third layer of a superplastic material metallurgically bonded to the side of said second layer opposite the side to which the said first layer is bonded.
Claim 4
Dependent Claim
58 words
A metal laminate comprising: (a) a first layer of a superplastic metal; (b) a second layer of a non-superplastic metal metallurgically bonded to one side of said first layer; and (c) a third layer of a superplastic material metallurgically bonded to the side of said second layer opposite the side to which the said first layer is bonded.
Claim 5
Dependent Claim
60 words
A metal laminate comprising: (a) a first layer of a non-superplastic metal; (b) a second layer of a superplastic metal metallurgically bonded to one side of said first layer; and (c) a third layer of non-superplastic metal metallurgically bonded to the side of said second layer opposite the side of said second layer which is bonded to said first layer.
Claim 6
Dependent Claim
60 words
A metal laminate comprising: (a) a first layer of a non-superplastic metal; (b) a second layer of a superplastic metal metallurgically bonded to one side of said first layer; and (c) a third layer of non-superplastic metal metallurgically bonded to the side of said second layer opposite the side of said second layer which is bonded to said first layer.
Claim 7
Dependent Claim
29 words
A metal laminate comprising alternating layers of at least a first layer of a superplastic metal and a second layer of non-superplastic materials which layers are metallurgically bonded together.
Claim 8
Dependent Claim
29 words
A metal laminate comprising alternating layers of at least a first layer of a superplastic metal and a second layer of non-superplastic materials which layers are metallurgically bonded together.
Claim 9
Dependent Claim
22 words
The laminate of claim 1, 2, 3 or 4 wherein said layers are metallurgically bonded together by roll bonding or diffusion bonding.
Claim 10
Dependent Claim
18 words
The laminate of claim 1, 2, 3 or 4 wherein said superplastic material is AISI 52100 bearing steel.
Claim 11
Dependent Claim
14 words
The laminate of claim 5 wherein said superplastic material is AISI 52100 bearing steel.
Claim 12
Dependent Claim
22 words
The laminate of claim 6 wherein said non-superplastic material is type 321 stainless steel, maraging steel, 4340 steel, or a combination thereof.
Claim 13
Dependent Claim
22 words
The laminate of claim 5 wherein said non-superplastic material is type 321 stainless steel, maraging steel, 4340 steel, or a combination thereof.
Claim 14
Dependent Claim
28 words
The laminate of claim 1, 2, 3 or 4 wherein said superplastic material is advanced ultra high carbon steel and wherein said non-superplastic material is low alloy steel.
Claim 15
Dependent Claim
24 words
The laminate of claim 5 wherein said superplastic material is advanced ultra high carbon steel and wherein said non-superplastic material is low alloy steel.
Claim 16
Dependent Claim
18 words
The laminate of claim 1, 2, 3 or 4 wherein said superplastic material is titanium-6 aluminum-4 vanadium alloy.
Claim 17
Dependent Claim
22 words
The laminate of claim 12 wherein said non-superplastic material is titanium-10 vanadium-2 iron-3 aluminum alloy or titanium-15 vanadium-3 chromium-3 aluminum-3 tin alloy.
Claim 18
Dependent Claim
14 words
The laminate of claim 5 wherein said superplastic material is titanium-6 aluminum-4 vanadium alloy.
Claim 19
Dependent Claim
22 words
The laminate of claim 5 wherein said non-superplastic material is titanium-10 vanadium-2 iron-3 aluminum alloy or titanium-15 vanadium-3 chromium-3 aluminum-3 tin alloy.
Claim 20
Dependent Claim
26 words
The laminate of claim 1, 2, 3 or 4 wherein said non-superplastic material is titanium-10 vanadium-2 iron-3 aluminum alloy or titanium-15 vanadium-3 chromium-3 aluminum-3 tin alloy.
Claim 21
Dependent Claim
31 words
The laminate of claim 1, 2, 3 or 4 wherein said superplastic material is Aluminum Association No. 7475 aluminum alloy and wherein said non-superplastic material is Aluminum Association 6061 aluminum alloy.
Claim 22
Dependent Claim
17 words
The laminate of claim 5 wherein said super plastic material is Aluminum Association No. 7475 aluminum alloy.
Claim 23
Dependent Claim
15 words
The laminate of claim 5 wherein said non-superplastic material is Aluminum Association 6061 aluminum alloy.
Claim 24
Dependent Claim
20 words
The laminate of claim 1, 2, 3 or 4 wherein said superplastic material is Aluminum Association No. 7475 aluminum alloy.
Claim 25
Dependent Claim
20 words
The laminate of claim 1, 2, 3 or 4 wherein said superplastic material is Aluminum Association No. 6061 aluminum alloy.
Claim 26
Dependent Claim
52 words
The process of forming metal laminates comprising: (a) heating a metal laminate comprised of layers of superplastic material bonded to layers of non-superplastic material to a temperature from about 40 percent to about 80 percent of the absolute melting temperature of the non-superplastic material in the laminate; and (b) forming said laminate.
Claim 27
Dependent Claim
52 words
The process of forming metal laminates comprising: (a) heating a metal laminate comprised of layers of superplastic material bonded to layers of non-superplastic material to a temperature from about 40 percent to about 80 percent of the absolute melting temperature of the non-superplastic material in the laminate; and (b) forming said laminate.
Claim 28
Dependent Claim
34 words
The process of claim 22 wherein said superplastic material is selected from the group consisting of AlSl 52100 bearing steel, advanced ultra high carbon steel, titanium-6 aluminum-4 vanadium, and Aluminum Association 7475 aluminum alloy.
Claim 29
Dependent Claim
46 words
The process of claim 22 wherein said non-superplastic material is selected from the group consisting of AlSl type 321 stainless steel, AISI 4340 steel maraging steel, low alloy steel, titanium-10 vanadium-2 iron-3 aluminum alloy, titanium-15 vanadium-3 chromium-3 aluminum-3 tin alloy, or Aluminum Association 6061 aluminum alloy.
References Cited (Backward Citations)
US3339271A
Cited
US3340101A
Cited
US3434319A
Cited
US3793700A
Cited
US3873458A
Cited
US3934441A
Cited
US3951697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |