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Dynamic grain growth and particle coarsening in Al–3.5Cu / O.V. Rofman in Acta materialia, Vol. 58 N° 7 (Avril 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 7 (Avril 2010) . - pp. 2527–2534 Titre : Dynamic grain growth and particle coarsening in Al–3.5Cu Type de document : texte imprimé Auteurs : O.V. Rofman, Auteur ; P.S. Bate, Auteur Année de publication : 2011 Article en page(s) : pp. 2527–2534 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Grain  growth  Coarsening  Aluminium Résumé : Grain growth and particle coarsening in Al–3.5Cu at a temperature of 450 °C has been studied. Plastic deformation of this Zener-pinned system at strain rates of 10−3 and 10−4 s−1 led to an increase in both the grain growth and particle coarsening rates. The results of mechanical tests and metallography, including in situ studies, showed that the material was deforming primarily by intragranular slip. The dynamic grain growth was ascribed to the geometric effect of deformation on the Zener pinning, and the rate sensitivity of the growth to the dynamic particle coarsening. The principal effect of deformation on particle coarsening was concluded to be increased diffusion due to the dislocation content. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008970 [article] Dynamic grain growth and particle coarsening in Al–3.5Cu [texte imprimé] / O.V. Rofman, Auteur ; P.S. Bate, Auteur . - 2011 . - pp. 2527–2534. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 7 (Avril 2010) . - pp. 2527–2534 Mots-clés : Grain  growth  Coarsening  Aluminium Résumé : Grain growth and particle coarsening in Al–3.5Cu at a temperature of 450 °C has been studied. Plastic deformation of this Zener-pinned system at strain rates of 10−3 and 10−4 s−1 led to an increase in both the grain growth and particle coarsening rates. The results of mechanical tests and metallography, including in situ studies, showed that the material was deforming primarily by intragranular slip. The dynamic grain growth was ascribed to the geometric effect of deformation on the Zener pinning, and the rate sensitivity of the growth to the dynamic particle coarsening. The principal effect of deformation on particle coarsening was concluded to be increased diffusion due to the dislocation content. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008970