LOCAL NONEQUILIBRIUM EFFECT ON RAPID DENDRITIC GROWTH IN A BINARY ALLOY MELT

Authors
GALENKO PK DANILOV DA
Citation
Pk. Galenko et Da. Danilov, LOCAL NONEQUILIBRIUM EFFECT ON RAPID DENDRITIC GROWTH IN A BINARY ALLOY MELT, Physics letters. A, 235(3), 1997, pp. 271-280
Citations number
35
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
235
Issue
3
Year of publication
1997
Pages
271 - 280
Database
ISI
SICI code
0375-9601(1997)235:3<271:LNEORD>2.0.ZU;2-A
Abstract
A model for nonisothermal rapid dendritic growth in an undercooled all oy melt is presented. Taking into account the finite speed of solute d iffusive propagation the analytical solution for isoconcentrational ne edle-like dendrites is obtained. A selection criterion for the dendrit ic tip radius under local nonequilibrium conditions is found. The pred ictions of the model are in qualitative and quantitative agreement wit h experiments. (C) 1997 Elsevier Science B.V.