Accession Number : ADP005935

Title :   Aluminum-Lithium: Application of Plate and Sheet to Fighter Aircraft,

Corporate Author : MCDONNELL CO ST LOUIS MO MATERIAL AND PROCESS DEVELOPMENT DEPT

Personal Author(s) : Davis, Byron A.

Report Date : AUG 1989

Pagination or Media Count : 11

Abstract : The potential for weight savings resulting from the low density and high stiffness of aluminium-lithium (Al-Li) alloys led McDonnell Aircraft Company to consider Al-Li alloys for use on both new and existing aircraft. The successful fabrication, and flight testing, of several demonstration parts on both the F-15 and F/A-18 increased interest in these alloys. In support of these and other applications of Al-Li plate and sheet, the mechanical properties, conventional formability and superplastic formability of 2090 and 8090 were evaluated. With a few notable exceptions, such as the anisotropy in sheet, these Al-Li alloys were comparable to conventional aluminum alloys. Chemical processing and corrosion resistance of 2090 and 8090 were also investigated and again were found comparable to conventional aluminum. Keywords: Alloys, Metallurgy, F-15 Aircraft, F/A-18 Aircraft, Applications of Al-2i plate and sheet, MCAIR, Mechanical properties, Corrosion. (JG)

Descriptors :   *AIRCRAFT, *ALUMINUM ALLOYS, *FIGHTER AIRCRAFT, *LITHIUM ALLOYS, *METALLURGY, *SHEETS, AIRCRAFT INDUSTRY, ALLOYS, ALUMINUM, ANISOTROPY, CHEMICALS, CORROSION, DEMONSTRATIONS, FLIGHT TESTING, LOW DENSITY, MECHANICAL PROPERTIES, PARTS, PROCESSING, WEIGHT REDUCTION.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE