A phase-field study of large-scale dendrite fragmentation in Al-Cu

被引：27
|
作者：
Wesner, Eugenia [1 ,2 ]
Choudhury, Abhik [2 ]
August, Anastasia [1 ,2 ]
Berghoff, Marco [2 ]
Nestler, Britta [1 ,2 ]
机构：
[1] IMP, D-76133 Karlsruhe, Germany
[2] KIT, IAM, D-76131 Karlsruhe, Germany
来源：
JOURNAL OF CRYSTAL GROWTH | 2012年 / 359卷
关键词：
Computer simulation; Dendrites; Solidification; Alloys; GROWTH; SOLIDIFICATION; ASYMPTOTICS; ALLOYS; MODELS;
D O I：
10.1016/j.jcrysgro.2012.08.036
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
In this work we analyze the fragmentation of a (FCC) dendrites in the Al-Cu alloy for different compositions. We use the phase field model for the simulation of 2D and 3D dendrite solidification and consequent melting and fragmentation studies. Our efforts lie in understanding the dependence of temperature and the history of temperature cycling on the dynamics of fragmentation. We discuss our results with relation to theoretical analysis in literature and derive signatures for fragmentation dynamics of 3D dendrites. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：107 / 121
页数：15
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