Lockheed Missiles & Space Company, Inc.

Other

Richard E Lewis

Jeffrey Wadsworth

Deborah Lynn Yaney

Donald D Crooks

Aldo E Vidoz

Ian G Palmer

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.

Spray cast Al-Li alloy composition and method of processing

A tent-like portable blasting room enclosure is provided with a central entry opening in the roof. Air is circulated through the blasting room enclosure and exits through spaced parallel air return ducts extending along the lower edges of the opposite side walls of the blast room enclosure through a closed loop abrasive conveying air stream. Inlet air diffusers are provided in the upper portion of the blasting room enclosure for uniformly distributing the air introduced into the blast room in a downward direction without creating turbulence in the blast room. The parallel air return ducts extend outwardly beyond the blasting room enclosure and define a second floor area adjacent the first floor area beneath the blasting room enclosure. The blasting room enclosure is mounted on rollers and a track extends parallel with the air return ducts to permit the blasting room enclosure to be moved between the first and second floor areas so that parts to be cleaned can be removed and replaced in the open floor area while sandblasting is taking place in the other adjacent floor area.

Abrasive blasting containment system

Aluminum base alloys characterized by low density, high elastic modulus and high strength and having a composition consisting esentially of aluminum--about 0.5 to about 4.3 weight percent lithium--about 0.02 to about 20 weight percent beryllium.

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Incline Village, NV, United States of America

Richard E Lewis