Extending phase field models of solidification to polycrystalline materials

TitleExtending phase field models of solidification to polycrystalline materials
Publication TypeJournal Article
Year of Publication2003
AuthorsWarren, JA, Kobayashi, R, Lobovsky, AE, Carter, WCraig
JournalActa Materialia
Volume51
Issue20
Pagination6035 - 6058
Date Published2003/12/08/
Abstract

We present a two-dimensional phase field model of grain boundary statics and dynamics. We begin with a brief description and physical motivation of the crystalline phase field model. The description is followed by characterization and analysis of several microstructural implications: the grain boundary energy as a function of misorientation, the liquid-grain-grain triple junction behavior, the wetting condition for a grain boundary and stabilized widths of intercalating phases at these boundaries, and evolution of a polycrystalline microstructure by solidification and impingement, followed by both grain boundary migration and grain rotation. Simulations that demonstrate these implications are presented, with a description of the numerical methods that were used to obtain them. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.