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Microstructure mapping of a friction stir welded AA2050 Al–Li–Cu in the T8 state

De Geuser, Frédéric and Malard, Benoit and Deschamps, Alexis Microstructure mapping of a friction stir welded AA2050 Al–Li–Cu in the T8 state. (2014) Philosophical Magazine, 94 (13). 1451-1462. ISSN 1478-6435

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Official URL: http://dx.doi.org/10.1080/14786435.2014.887862

Abstract

The heterogeneous precipitate microstructure of a AA2050 Al–Li–Cu in the T8 state after friction stir welding has been mapped by small-angle X-ray scattering (SAXS). 2D resolved maps of the fraction and size of both T1 platelets precipitates and clusters/GP zones formed at room temperature are provided. TEM micrographs of selected zone confirm the interpretation of SAXS intensities. This microstructure mapping is compared to microhardness mapping and a direct correlation is shown. Short duration heat treatments made in a salt bath help understanding precipitate stability and suggest that the temperature exploration alone explains to a large extent the distribution of the precipitates microstructure across the welded structure.

Item Type:Article
Additional Information:Thanks to Taylor & Francis editor. The definitive version is available at http://www.tandfonline.com The original PDF of the article can be found at Taylor & Francis website : http://www.tandfonline.com/doi/abs/10.1080/14786435.2014.887862?tab=permissions
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)
Other partners > Institut polytechnique de Grenoble (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université Joseph Fourier Grenoble 1 - UJF (FRANCE)
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ANR MatetPro program
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Deposited By: cirimat webmestre
Deposited On:30 Jun 2015 09:54

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