Accession Number:

ADP005935

Title:

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

Descriptive Note:

Corporate Author:

MCDONNELL CO ST LOUIS MO MATERIAL AND PROCESS DEVELOPMENT DEPT

Personal Author(s):

Report Date:

1989-08-01

Pagination or Media Count:

11.0

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 FA-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, FA-18 Aircraft, Applications of Al-2i plate and sheet, MCAIR, Mechanical properties, Corrosion. JG

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE