Anisotropy Decrease in Sheets of 1424 Al-Mg-Li Alloy

Abstract:

Article Preview

The fine-fibrous nonrecrystallized structure determines substantial tensile property anisotropy of hot rolled 1424 alloy sheets. In the present work the possibility of producing a fully recrystallized structure in cold rolled sheets was investigated. To improve a technological plasticity a cold rolling was performed after preliminary annealing of hot rolled sheets. The technological plasticity was studied by means of determination a critical deformation degree at plane strain compression at room temperature. The phase composition of hot rolled and annealed sheets was investigated using TEM and X-ray analysis. The uniform fine-grained and fully recrystallized structure in sheets was obtained after rolling with preliminary annealing at 350-380°C and final solid solution treatment. After the indicated above annealing the maximum volume fraction of the equilibrium S1-phase precipitates was observed in the alloy. After cooling in air from the annealing temperature it was found a very small quantity of δ′-phase and after slow cooling with the furnace this phase was practically absent. The fully recrystallized structure in sheets provides a substantial decrease of the tensile property anisotropy in three d irections.

Info:

Periodical:

Materials Science Forum (Volumes 519-521)

Edited by:

W.J. Poole, M.A. Wells and D.J. Lloyd

Pages:

371-376

DOI:

10.4028/www.scientific.net/MSF.519-521.371

Citation:

L.B. Khokhlatova et al., "Anisotropy Decrease in Sheets of 1424 Al-Mg-Li Alloy", Materials Science Forum, Vols. 519-521, pp. 371-376, 2006

Online since:

July 2006

Export:

Price:

$35.00

[1] Van Horn K.R.: Trans. Amer. Soc. Metals, 47, (1955), p.38.

[2] J.N. Fridlyander, N.I. Kolobnev, L.B. Khokhlatova, A.L. Beresina, A.V. Katko, A. Haszler, C. Keidel: Mater. Sci. Forum Vol. 331-337 (2000) p.867.

DOI: 10.4028/www.scientific.net/msf.331-337.867

[3] Yu. M. Vainblat, N. A. Sharshagin, L. B. Khokhlatova, N. I. Kolobnev, N. V. Bukharina, L. G. Klimovich: Proceed. of ICAA-9 (2004), p.383.

[4] Davydov V.G. et al.: Al-Li Alloys V1, (1992), v. 1, p.265.

[5] J.N. Fridlyander, N.I. Kolobnev, L.B. Khokhlatova, E. Loechelt, P. -J. Winkler, T. Pfannenmuller: Proceed. of ICAA-6 (1998), v. 3, p. (2055).

In order to see related information, you need to Login.