The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 1996
Filed:
Apr. 25, 1994
Deborah L Yaney, Sunnyvale, CA (US);
Richard E Lewis, Incline Village, NV (US);
Lockheed Missiles & Space Company, Inc., Sunnyvale, CA (US);
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.