Documents disponibles écrits par cet auteur

Diffusion creep and superplasticity in aluminium alloys / K. Sotoudeh in Acta materialia, Vol. 58 N° 6 (Avril 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 6 (Avril 2010) . - pp. 1909–1920 Titre : Diffusion creep and superplasticity in aluminium alloys Type de document : texte imprimé Auteurs : K. Sotoudeh, Auteur ; P.S. Bate, Auteur Année de publication : 2011 Article en page(s) : pp. 1909–1920 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Superplasticity  Aluminium  Diffusion  creep Résumé : The plastic deformation of two classes of fine-grained aluminium alloys at elevated temperatures and slow strain rates have been investigated. One class of material, Al–Cu–Zr, was processed to develop banded microstructures; the other class, based on Al–(Mg)–Mn, had near-equiaxed microstructures. In both classes, superplastic behaviour was found in the variants with the higher solute content. The evolution of the banded microstructures and the results from surface grid measurement in the Al–(Mg)–Mn alloys give results which indicate that the superplasticity is primarily a result of diffusion creep, and the effect of solute is proposed to be via an enhancement of solvent self-diffusion. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008131 [article] Diffusion creep and superplasticity in aluminium alloys [texte imprimé] / K. Sotoudeh, Auteur ; P.S. Bate, Auteur . - 2011 . - pp. 1909–1920. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 6 (Avril 2010) . - pp. 1909–1920 Mots-clés : Superplasticity  Aluminium  Diffusion  creep Résumé : The plastic deformation of two classes of fine-grained aluminium alloys at elevated temperatures and slow strain rates have been investigated. One class of material, Al–Cu–Zr, was processed to develop banded microstructures; the other class, based on Al–(Mg)–Mn, had near-equiaxed microstructures. In both classes, superplastic behaviour was found in the variants with the higher solute content. The evolution of the banded microstructures and the results from surface grid measurement in the Al–(Mg)–Mn alloys give results which indicate that the superplasticity is primarily a result of diffusion creep, and the effect of solute is proposed to be via an enhancement of solvent self-diffusion. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008131