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Growth morphologies in peritectic solidification of Fe–C: A phase-field study / Abhik Choudhury in Acta materialia, Vol. 58 N° 10 (Juin 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 10 (Juin 2010) . - pp. 3815–3823 Titre : Growth morphologies in peritectic solidification of Fe–C: A phase-field study Type de document : texte imprimé Auteurs : Abhik Choudhury, Auteur ; Britta Nestler, Auteur ; Abhishek Telang, Auteur Année de publication : 2011 Article en page(s) : pp. 3815–3823 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Phase  field  Diffusion  Peritectic  Nucleation  Surface  energy Résumé : We use a thermodynamically consistent multi-phase, multi-component phase-field model, where the evolution equations for the different fields are derived from an entropy functional, for simulating peritectic growth structures in two and three dimensions. Different solidification morphologies are obtained in the computations and the characteristic properties of the growth forms are discussed. The phase-field method allows for a prediction of the surface energies in the three-phase system δ-ferrite, γ-austenite and liquid based on comparison between experimentally observed and simulated structures. Additionally an investigation of possible nucleation sites in evolving domains is presented and its dependence on the solid–solid surface energy is examined. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410001758 [article] Growth morphologies in peritectic solidification of Fe–C: A phase-field study [texte imprimé] / Abhik Choudhury, Auteur ; Britta Nestler, Auteur ; Abhishek Telang, Auteur . - 2011 . - pp. 3815–3823. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 10 (Juin 2010) . - pp. 3815–3823 Mots-clés : Phase  field  Diffusion  Peritectic  Nucleation  Surface  energy Résumé : We use a thermodynamically consistent multi-phase, multi-component phase-field model, where the evolution equations for the different fields are derived from an entropy functional, for simulating peritectic growth structures in two and three dimensions. Different solidification morphologies are obtained in the computations and the characteristic properties of the growth forms are discussed. The phase-field method allows for a prediction of the surface energies in the three-phase system δ-ferrite, γ-austenite and liquid based on comparison between experimentally observed and simulated structures. Additionally an investigation of possible nucleation sites in evolving domains is presented and its dependence on the solid–solid surface energy is examined. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645410001758