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Morphology diagram of thermal dendritic solidification by means of phase-field models in two and three dimensions
KTH, School of Engineering Sciences (SCI), Mechanics, Physicochemical Fluid Mechanics.ORCID iD: 0000-0003-3336-1462
2006 (English)In: Journal of Crystal Growth, ISSN 0022-0248, E-ISSN 1873-5002, Vol. 296, no 1, 58-68 p.Article in journal (Refereed) Published
Abstract [en]

We have determined morphology diagrams in two and three dimensions for two different phase-field models [A.A Wheeler, B.T. Murray, R.J. Schaefer, Physica D 66 (1993) 243; A. Karma, W.-J. Rappel, Phys. Rev. E 57 (1998) 4323] for the parameters undercooling and anisotropy of surface tension. The comparison with analytical predictions show a qualitative correspondence, however, the predicted shape of the morphology boundary differs significantly from the shape found in our simulations. The two investigated models show the same quantitative behavior. Our simulations in 3D have shown that the shape of the morphology boundary is qualitatively similar to the one in 2D. However, we find that the border is shifted by an amount of 0.3% on the anisotropy axis. Our simulated 3D structures show a qualitative correspondence to the ones we have found in in situ experiments with xenon.

Place, publisher, year, edition, pages
2006. Vol. 296, no 1, 58-68 p.
Keyword [en]
computer simulation, crystal morphology, dendrites, morphological stability, solidification, growth from melt, diffusional growth, xenon dendrites, pattern-formation, crystal-growth, 3 dimensions, simulations, parameters, systems
Identifiers
URN: urn:nbn:se:kth:diva-16116DOI: 10.1016/j.jcrysgro.2006.07.033ISI: 000241884200009Scopus ID: 2-s2.0-33749543448OAI: oai:DiVA.org:kth-16116DiVA: diva2:334158
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Amberg, Gustav

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