期刊
ACTA MATERIALIA
卷 57, 期 11, 页码 3382-3390出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2009.04.001
关键词
Phase-field modelling; Interfaces; Grain morphology; Anisotropy
An expression for anisotropic interfacial energy of hexagonal close-packed metals has been formulated which is able to reproduce published data obtained using the modified embedded-atom method, covering the variation in interface energy as a function of orientation for a number of metals. The coefficients associated with the expression can be determined fully by measured or calculated interfacial energies Of just three independent crystal planes. Three-dimensional phase-field model simulations using this representation of interfacial energy have been found to yield convincing crystal morphologies. The apparent rate of crystal growth as a function of orientation in the phase-field simulation agrees with predictions made by surface energy theory. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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