Accession Number : ADP005927

Title :   Aluminum Lithium Alloys for Navy Aircraft,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA

Personal Author(s) : Lee, E. W. ; Waldman, J.

Report Date : AUG 1989

Pagination or Media Count : 10

Abstract : Ingot metallurgy alloys of aluminum with lithium additions offer large gains in structural efficiency due to reduced density together with increased strength and elastic modulus. Several alloys are now commercially available. The Navy has been sponsoring R&D activities in these alloys since the mid-seventies. Current efforts include ongoing multi-laboratory evaluations of aluminium-lithium alloys to replace 7075-T6 and 7075-T73. The Navy is also conducting R&D on thermal mechanical processing and superplastic forming on these alloys. Additional testing is being conducted to determine their corrosion resistance in an aircraft carrier environment. Keywords: Alloys, Metallurgy, Naval aircraft, RA-5C Vigilante, Symposia, Mechanical properties. (JG)

Descriptors :   *ALUMINUM ALLOYS, *LITHIUM ALLOYS, *NAVAL AIRCRAFT, ADDITION, AIRCRAFT CARRIERS, ALLOYS, ALUMINUM, CASTINGS, CORROSION RESISTANCE, DENSITY, EFFICIENCY, ENVIRONMENTS, LABORATORIES, LITHIUM, MECHANICAL PROPERTIES, METALLURGY, MODULUS OF ELASTICITY, PROCESSING, REDUCTION, STRUCTURAL PROPERTIES, SYMPOSIA, TEST AND EVALUATION, THERMOMECHANICS.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE