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Couturier, L., Deschamps, A., De Geuser, F., Fazeli, F. & Poole, W. J. (2017) An investigation of the strain dependence of dynamic precipitation in an Al-Zn-Mg-Cu alloy. Scripta Materialia, 136 120–123.
Added by: Richard Baschera (2017-07-10 12:53:33) Last edited by: Richard Baschera (2017-07-10 12:55:02) |
| Type de référence: Article DOI: 10.1016/j.scriptamat.2017.04.031 Numéro d'identification (ISBN etc.): 1359-6462 Clé BibTeX: Couturier2017 Voir tous les détails bibliographiques  |
Catégories: ID2M, INTERNATIONAL Créateurs: Couturier, De Geuser, Deschamps, Fazeli, Poole Collection: Scripta Materialia |
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| Résumé |
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The use of high strength Al-Zn-Mg-Cu alloys in automotive components is restricted by their low formability. Warm forming in the under-aged state improves formability, but induces a strain-dependent microstructure evolution due to dynamic precipitation. We present a new methodology to quantitatively evaluate the dynamic precipitation strain dependence which is applicable to strain rates relevant to forming. The plastic strain is varied using a tapered tensile sample and the precipitation state is measured in terms of size and volume fraction using spatially resolved small-angle X-ray scattering, showing its evolution during straining is dependent on the imposed strain level and rate. Crown Copyright (C) 2017 Published by Elsevier Ltd on behalf of Acta Materialia Inc. All rights reserved.
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