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

被引：134

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

页码：992 / 1002

页数：11

共 36 条

[1]

Alfintsev G. A., 1981, Metallofizika, V3, P114

[2]

[Anonymous], 1988, RAPID SOLIDIFICATION

[3] CONTINUOUS GROWTH-MODEL FOR INTERFACE MOTION DURING ALLOY SOLIDIFICATION [J].

AZIZ, MJ ;

KAPLAN, T .

ACTA METALLURGICA, 1988, 36 (08) :2335-2347

[4] MODEL FOR SOLUTE REDISTRIBUTION DURING RAPID SOLIDIFICATION [J].

AZIZ, MJ .

JOURNAL OF APPLIED PHYSICS, 1982, 53 (02) :1158-1168

[5]

Baker J.C., 1971, SOLIDIFICATION, P23

[6]

Boettinger W.J., 1986, Science and Technology of the Undercooled Melt, P81, DOI 10.1007/978-94-009-4456-5_5

[7]

Borisov V. T., 1987, Theory of two-phase zone of a metal ingot

[8]

Chernov A. A., 1984, Springer Series in Solid -State Sciences, V36

[9] DENDRITE GROWTH VELOCITY IN UNDERCOOLED NICKEL MELTS [J].

COLLIGAN, GA ;

BAYLES, BJ .

ACTA METALLURGICA, 1962, 10 (SEP) :895-&

[10]

CORIELL SR, 1982, ACTA METALL, V30, P2139

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