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Kinetics of isothermal phase transformations above and below the peritectic temperature / G. Boussinot in Acta materialia, Vol. 58 N° 5 (Mars 2010) 

Public ISBD [article]  in Acta materialia > Vol. 58 N° 5 (Mars 2010) . - pp. 1750–1760 Titre : Kinetics of isothermal phase transformations above and below the peritectic temperature : Phase-field simulations Type de document : texte imprimé Auteurs : G. Boussinot, Auteur ; E. A. Brener, Auteur ; D.E. Temkin, Auteur Année de publication : 2011 Article en page(s) : pp. 1750–1760 Note générale : Métallurgie Langues : Anglais (eng) Mots-clés : Peritectic  phase  diagram  Phase-field  model  Triple  junction  Liquid-film-migration Résumé : We present phase-field simulations of isothermal phase transformations in the peritectic system below and above the peritectic temperature. The physical processes involved are of different natures, involving either a triple junction or a liquid-film-migration (LFM) mechanism. Below the peritectic temperature, one of the solid phases steadily grows along the other. Above the peritectic temperature the phase transformation proceeds via the LFM mechanism. To the best of our knowledge, this mechanism has not been discussed in the literature as a generic process of phase transitions in peritectic systems. In addition to the LFM process, we also simulate melting along the solid–solid interface. Finally, we make a simplified linear stability analysis of the liquid film, supporting our simulation results. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007964 [article] Kinetics of isothermal phase transformations above and below the peritectic temperature : Phase-field simulations [texte imprimé] / G. Boussinot, Auteur ; E. A. Brener, Auteur ; D.E. Temkin, Auteur . - 2011 . - pp. 1750–1760. Métallurgie Langues : Anglais (eng) in Acta materialia > Vol. 58 N° 5 (Mars 2010) . - pp. 1750–1760 Mots-clés : Peritectic  phase  diagram  Phase-field  model  Triple  junction  Liquid-film-migration Résumé : We present phase-field simulations of isothermal phase transformations in the peritectic system below and above the peritectic temperature. The physical processes involved are of different natures, involving either a triple junction or a liquid-film-migration (LFM) mechanism. Below the peritectic temperature, one of the solid phases steadily grows along the other. Above the peritectic temperature the phase transformation proceeds via the LFM mechanism. To the best of our knowledge, this mechanism has not been discussed in the literature as a generic process of phase transitions in peritectic systems. In addition to the LFM process, we also simulate melting along the solid–solid interface. Finally, we make a simplified linear stability analysis of the liquid film, supporting our simulation results. DEWEY : 669 ISSN : 1359-6454 En ligne : http://www.sciencedirect.com/science/article/pii/S1359645409007964