The Influence of High Plastic Strain on Precipitation from Solid Solution in Third Generation Al-Li Alloys

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Different levels of compression plane strain were applied to third generation aluminum alloys to simulate rolling-type deformation following solution heat treatment. The aluminum alloys utilized were extruded production samples provided by Alcoa in a solution heat treated condition (T4). The alloys included in this study are AA2099-T4 containing 1.78 wt% lithium, and AA2055-T4 containing 1.13 wt% lithium and an additional component of 0.45 wt% silver. Following plane strain compression, the samples were isothermally heat treated at 155 °C for times up to about 7 days. Data presented include hardening behavior values and various electron microscopy techniques using conventional TEM to document subsequent precipitate sequence distributions and general kinetics.

Info:

Periodical:

Materials Science Forum (Volumes 794-796)

Edited by:

Knut Marthinsen, Bjørn Holmedal and Yanjun Li

Pages:

1020-1025

DOI:

10.4028/www.scientific.net/MSF.794-796.1020

Citation:

W. A. Cassada and G. J. Shiflet, "The Influence of High Plastic Strain on Precipitation from Solid Solution in Third Generation Al-Li Alloys", Materials Science Forum, Vols. 794-796, pp. 1020-1025, 2014

Online since:

June 2014

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$38.00

* - Corresponding Author

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