The influence of solid-liquid interfacial energy anisotropy on equilibrium shapes, nucleation, triple lines and growth morphologies

被引：20
|
作者：
Rappaz, M. [1 ]
Friedli, J. [1 ]
Mariaux, A. [1 ]
Salgado-Ordorica, M. [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, IMX STI, Lab Simulat Mat, CH-1015 Lausanne, Switzerland
来源：
SCRIPTA MATERIALIA | 2010年 / 62卷 / 12期
关键词：
Solid-liquid interfacial energy anisotropy; Heterogeneous nucleation; Equilibrium shape; Dendrite morphology; VECTOR THERMODYNAMICS; NUMERICAL-SIMULATION; DENDRITES; SURFACES; ALLOYS; SOLIDIFICATION; ALUMINUM; SYSTEMS;
D O I：
10.1016/j.scriptamat.2010.02.039
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The anisotropy of the solid-liquid interfacial energy plays a key role during the formation of as-solidified microstructures. Using the xi-vector formalism of Cahn and Hoffman, this contribution presents the effect that anisotropy has on the equilibrium shapes of crystals and on surface tension equilibrium at triple lines. Consequences for heterogeneous nucleation of anisotropic crystals and for dendritic growth morphologies are detailed with specific examples related to Al-Zn and Zn-Al alloys. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：904 / 909
页数：6
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