Model for free dendritic alloy growth under interfacial and bulk phase nonequilibrium conditions

被引：133
作者：
Galenko, PK [1 ]
Danilov, DA [1 ]
机构：
[1] Udmurt State Univ, Fac Phys, Lab Condensed Matter Phys, Izhevsk 426034, Russia
来源：
JOURNAL OF CRYSTAL GROWTH | 1999年 / 197卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
model; dendrite; non-Fickian diffusion; local nonequilibrium effect; rapid solidification; undercooling; solute trapping;
D O I：
10.1016/S0022-0248(98)00977-4
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
A model for free dendritic growth during rapid solidification, which is based on a modified solute diffusion equation that treats local nonequilibrium in the bulk phases is presented. Taking into account the finite speed of solute diffusive propagation, the model predicts the steady-state dendrite tip velocity and the dendritic tip radius. A satisfactory agreement of the model predictions with experimental data in Cu-Ni alloy is found. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码：992 / 1002
页数：11
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