Metal treatment – Process of modifying or maintaining internal physical... – With casting or solidifying from melt
Patent
1994-04-25
1996-05-28
Simmons, David A.
Metal treatment
Process of modifying or maintaining internal physical...
With casting or solidifying from melt
148549, 148552, 148689, 148690, 148694, 148695, 148698, 148415, 148437, 164 46, 420528, 420552, 420590, C22F 104
Patent
active
055207545
ABSTRACT:
A composition and method for producing a low density, high stiffness aluminum alloy which is capable of being processed into structural components having a desired combination of tensile strength, fracture toughness and ductility. The method includes the steps of forming, by spray deposition, a solid Al-Li alloy workpiece consisting essentially of the formula Al.sub.bal Li.sub.a Zr.sub.b wherein "a" ranges from greater than about 2.5 to 7 wt %, and "b" ranges from greater than about 0.13 to 0.6 wt %, the balance being aluminum, said alloy having been solidified at a cooling rate of about 10.sup.2 to 10.sup.4 K/sec. The method further includes several variations of selected thermomechanical process steps for: (1) eliminating any residual porosity which may be present in the workpiece as a result of the spray deposition step; and (2) producing components for a wide range of applications.
REFERENCES:
patent: 4661172 (1987-04-01), Skinner et al.
patent: 4938275 (1990-07-01), Leatham et al.
patent: 5223216 (1993-06-01), LaSalle
P. J. Meschter, R. J. Lederich, J. E. O'Neal, "Microstructure and Properties of Rapid Solidification Processed (RSP) Al-4Li and Al-5Li Alloys," Aluminum-Lithium Alloys III, eds. C. Baker, P. J. Greeson, S. J. Harris, C. J. Peel, Institute of Metals, London, 1986, pp. 85-96.
M. J. Kaufman, A. A. Morone, & R. E. Lewis, "Complictions Concerning TEM Analysis of the .delta.-AlLi Phase in Aluminum-Lithium Alloys", Scripta Metallurgica, Dec. 1992, vol. 27, pp. 1265-1270.
I. G. Palmer, D. J. Chellman, J. White, "Evaluation of a Spray Deposited Low Density Al-Li Alloy", ICSF2, Swansea, U.K. Sep. 1993.
Nack L. Kim, "Structure and Properties of Rapidly Solidified Al-Li-Cu-Mg-Zr Alloys with a High Zirconium Content", Materials Science & Engineering, Al58 Dec. 1992.
Lewis Richard E.
Yaney Deborah L.
Koehler Robert R.
Lockheed Missiles & Space Company Inc.
Simmons David A.
Volk H. Donald
LandOfFree
Spray cast Al-Li alloy composition and method of processing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spray cast Al-Li alloy composition and method of processing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spray cast Al-Li alloy composition and method of processing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-783642