| Titre : | A three-dimensional sharp interface model for the quantitative simulation of solutal dendritic growth (2010) |
| Auteurs : | Shiyan Pan, Auteur ; Mingfang Zhu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 1, Janvier 2010) |
| Article en page(s) : | pp. 340–352 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | Microstructure modeling Solutal dendritic growth Weighted mean curvature Three dimensions |
| Résumé : | A three-dimensional (3-D) sharp interface model is developed to simulate the solutal dendritic growth in the low Péclet number regime. The model adopts a previously proposed solutal equilibrium approach to calculate the evolution of the solid/liquid interface. To describe specific crystallographic orientations of 3-D dendritic growth, a weighted mean curvature algorithm incorporated with the anisotropy of surface energy is proposed, allowing the simulation of 3-D dendrites with various orientations in a straightforward manner. The model validation is performed by comparing the simulations with the analytical predictions and experimental data for both single and multi-dendritic growth, which demonstrates the quantitative capabilities of the proposed model. The model efficiently reproduces realistic 3-D multi-equiaxed and columnar dendrites with various orientations and well-developed side branches. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1359645409006089 |
