Brunet, Magali and Malard, Benoît and Ratel-Ramond, Nicolas and Deshayes, Christophe and Joulié, Sébastien and Warot-Fonrose, Bénédicte and Sciau, Philippe and Douin, Joël and De Geuser, Frédéric and Deschamps, Alexis
Precipitation in original Duralumin A-U4G versus modern 2017A alloy.
(2019)
Materialia, 8. 100429. ISSN 2589-1529
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(Document in English)
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Official URL: https://doi.org/10.1016/j.mtla.2019.100429
Abstract
Precipitation in Duralumin, a historic quaternary alloy of the type: Al–Cu–Mg–Si, was never fully studied nor observed by current electron microscopy techniques. This article presents the full characterization and comparison of two alloys: a Duralumin (A-U4G) from the 1950s collected on a vintage aircraft and its modern equivalent: a 2017A alloy. The as-received and peak-aging states were analysed with DSC, SAXS and TEM advanced techniques. It is shown that old Duralumin and modern 2017A present a similar nanoprecipitation in the as-received state and behave similarly upon artificial aging. As opposed to what has been reported in the past, three types of precipitates participating in hardening were found upon aging: θ’-Al2Cu, Q’(Q)-AlCuMgSi and Ω-Al2Cu.
Item Type: | Article |
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Audience (journal): | International peer-reviewed journal |
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Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Other partners > Institut polytechnique de Grenoble (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
Laboratory name: | |
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Deposited On: | 02 Dec 2019 13:01 |
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