The surface tension force of anisotropic interphase boundaries is perpendicular to the solidification front during eutectic growth - Archive ouverte HAL
Communication Dans Un Congrès Année : 2012

The surface tension force of anisotropic interphase boundaries is perpendicular to the solidification front during eutectic growth

S. Bottin-Rousseau
  • Fonction : Auteur
M. Serefoglu
  • Fonction : Auteur
Silvère Akamatsu
  • Fonction : Auteur
  • PersonId : 1001716
G. Faivre
  • Fonction : Auteur

Résumé

The irregular growth dynamics of the so-called locked (tilted) lamellar eutectic grains that are observed in directional solidification of nonfaceted/nonfaceted eutectic alloys, is attributable to a strong surface tension anisotropy of the interphase boundaries, which enters into the local-equilibrium (Young-Herring) condition at the trijunctions of the solid-liquid interfaces. Based on real-time observations of locked eutectic growth in thin samples, we propose that the lamellar tilt angle is selected by the system in such a way that the Hoffmann-Cahn surface tension force ((sigma) over right arrow vector) of the interphase boundaries is approximatively perpendicular to the solidification front.

Dates et versions

hal-01239005 , version 1 (07-12-2015)

Identifiants

Citer

S. Bottin-Rousseau, M. Serefoglu, Silvère Akamatsu, G. Faivre. The surface tension force of anisotropic interphase boundaries is perpendicular to the solidification front during eutectic growth. 3RD INTERNATIONAL CONFERENCE ON ADVANCES IN SOLIDIFICATION PROCESSES, 2012, DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND, Unknown Region. pp.012088, ⟨10.1088/1757-899X/27/1/012088⟩. ⟨hal-01239005⟩
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