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Natural aging on Al-Cu-Mg structural hardening alloys – Investigation of two historical duralumins for aeronautics

Cochard, Audrey and Zhu, Kailin and Joulié, Sébastien and Douin, Joël and Huez, Julitte and Robbiola, Luc and Sciau, Philippe and Brunet, Magali Natural aging on Al-Cu-Mg structural hardening alloys – Investigation of two historical duralumins for aeronautics. (2017) Materials Science and Engineering A, 690. 259-269. ISSN 0921-5093

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Official URL: http://dx.doi.org/10.1016/j.msea.2017.03.003

Abstract

This article presents the metallurgic study of sixty years old structural hardening Al-Cu-Mg alloys recovered from a double-deck aircraft Breguet 765. This study aims to characterize and understand the evolution of alloys over very long periods thanks to an approach coupling materials characterization and archives researches. The focus is made on two ancient age hardening Al-Cu alloys: A-U4G and A-U4G1, whose compositions are close to the international designations 2017A and 2024 respectively. Multi-scale structural investigation was carry out and mechanical properties were extracted. It is shown that despite natural aging during long periods, these alloys exhibit mechanical properties (yield strength, ultimate tensile strength and rupture strain) close to the expected original specifications.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF of the article can be found at https://www.sciencedirect.com/science/article/pii/S0921509317302927
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Laboratory name:
Funders:
RTRA (Réseau Thématique de Recherche Avancée) - doctoral fellowship PRES (Ref. 5913)/ Région (Ref. 12053330) - Programme Investissements d’Avenir
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Deposited By: cirimat webmestre
Deposited On:16 Mar 2018 13:18

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