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Anisotropic viscosities and shrinkage rates in sintering of particles arranged in a simple orthorhombic structure / F. Wakai in Acta materialia, Vol. 58 N° 6 (Avril 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 6 (Avril 2010) . - pp. 1921–1929 Titre : Anisotropic viscosities and shrinkage rates in sintering of particles arranged in a simple orthorhombic structure Type de document : texte imprimé Auteurs : F. Wakai, Auteur ; T. Akatsu, Auteur Année de publication : 2011 Article en page(s) : pp. 1921–1929 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Sintering  Simulation  Micromechanical  modeling Résumé : Macroscopic shrinkage in sintering is described as a linear function of the sintering stress tensor and the viscosity tensor, which is determined by taking into account the grain boundary diffusion mechanism and the anisotropy in the microstructure. For a simple orthorhombic structure in equilibrium, the anisotropic shrinkage rate is dominated by the deviatoric component of the viscosity tensor, which is approximately proportional to the logarithm of the aspect ratio of a volume element, and acts so as to deform the elongated structure to be more isotropic. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008143 [article] Anisotropic viscosities and shrinkage rates in sintering of particles arranged in a simple orthorhombic structure [texte imprimé] / F. Wakai, Auteur ; T. Akatsu, Auteur . - 2011 . - pp. 1921–1929. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 6 (Avril 2010) . - pp. 1921–1929 Mots-clés : Sintering  Simulation  Micromechanical  modeling Résumé : Macroscopic shrinkage in sintering is described as a linear function of the sintering stress tensor and the viscosity tensor, which is determined by taking into account the grain boundary diffusion mechanism and the anisotropy in the microstructure. For a simple orthorhombic structure in equilibrium, the anisotropic shrinkage rate is dominated by the deviatoric component of the viscosity tensor, which is approximately proportional to the logarithm of the aspect ratio of a volume element, and acts so as to deform the elongated structure to be more isotropic. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409008143