J. Phys. Colloques
Volume 48, Numéro C3, Septembre 19874th International Aluminium Lithium Conference
|Page(s)||C3-231 - C3-237|
J. Phys. Colloques 48 (1987) C3-231-C3-237
INFLUENCE OF FORMING IN THE T3 CONDITION ON PROPERTIES OF 2090-T8X, 2091-T8X AND 8090-T8XJ.M. PAPAZIAN, G.G. BOTT et P. SHAW
Grumman Corporation, Corporate Research Center, Bethpage, NY 11714-3580, U.S.A.
A forming sequence for Al-Li alloys in which T3 material is aged directly to T8 without an intervening solution treatment would be desirable. Such a sequence would allow forming in a relatively formable condition, provide the deformation necessary for highest strength, and eliminate quenching distortion problems. In order to evaluate the feasibility of such a sequence, we have subjected samples of 2090-T3E27, 2091-T3 and 8090-T3 to various amounts of stretching, aged them for various lengths of time and measured their tensile strength and corrosion resistance, and characterized their precipitate microstructures. The results of these tests show some differences in response between the alloys but indicate that the proposed sequence is feasible.