Accession Number : ADP005926

Title :   Investigation on Sheet Material of 8090 and 2091 Aluminum-Lithium Alloy,

Corporate Author : MESSERSCHMITT-BOELKOW-BLOHM G M B H BREMEN (GERMANY F R)

Personal Author(s) : Zink, W. ; Weilke, J. ; Schwarmann, L. ; Rendigs, K. H.

Report Date : AUG 1989

Pagination or Media Count : 15

Abstract : The new aluminium-lithium alloys offer an attractive alternative of reducing structural weight for civil aircraft components. For fuselage application the damage tolerant version of Aluminium-Lithium as substitution of 2024 T3 material is of greatest interest. The Al-Li alloys 2091 and 8090, developed by PECHINEY, ALCOA and ALCAN for 2024 T3 substitution will be presented in view of mechanical properties and damage tolerant behaviour with special emphasis placed on the comparison with conventional alloys. Fracture toughness data from R-Curves carried out on CCT-specimens as well as crack propagation behaviour and fatigue results will be discussed. Keywords: Alloys, Metallurgy, Sheet material, West Germany, Mechanical properties, Symposia. (JG)

Descriptors :   *MATERIALS, *SHEETS, *ALUMINUM ALLOYS, *LITHIUM ALLOYS, AIRCRAFT, AIRCRAFT EQUIPMENT, ALLOYS, BEHAVIOR, CIVIL AVIATION, CRACK PROPAGATION, DAMAGE, FATIGUE, FRACTURE(MECHANICS), FUSELAGES, MECHANICAL PROPERTIES, METALLURGY, STRUCTURAL PROPERTIES, SYMPOSIA, TOLERANCE, TOUGHNESS, WEIGHT, WEST GERMANY.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE