Effect of convective flow on stable dendritic growth in rapid solidification of a binary alloy / Galenko P. K.,Danilov D. A.,Reuther K.,Alexandrov D. V.,Rettenmayr M.,Herlach D. M. // JOURNAL OF CRYSTAL GROWTH. - 2017. - V. 457, l. SI. - P. 349-355.

ISSN/EISSN:

0022-0248 / 1873-5002

Type:

Article; Proceedings Paper

Abstract:

A model for anisotropic growth of a dendritic crystal in a binary mixture under non-isothermal conditions is presented. A criterion for a stable growth mode is given for the dendrite tip as a function of the thermal Peclet number and the ratio between the velocities of dendrite growth and solute diffusion in the liquid bulk. Limiting cases of known criteria for anisotropic dendrite growth at low and high growth Peclet numbers are provided. The inclusion of forced convective flow extends the range of theoretical predictions, especially to low growth velocities, thus eliminating systematic discrepancies between earlier models and observed experimental data, as shown by a comparison of model predictions with measured growth velocities in Ti-55 at\% Al alloys solidified under electromagnetic levitation. (C) 2016 Elsevier B.V. All rights reserved.

Author keywords:

Dendrites; Growth models; Morphological stability; Growth from melt UNDERCOOLED MELTS; FORCED-CONVECTION; MODEL

DOI:

10.1016/j.jcrysgro.2016.07.042

Web of Science ID:

ISI:000389590700061

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN 1
Note	5th European Conference for Crystal Growth (ECCG), Bologna, ITALY, SEP, 2015
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-5002
Keywords-Plus	UNDERCOOLED MELTS; FORCED-CONVECTION; MODEL
Research-Areas	Crystallography; Materials Science; Physics
Web-of-Science-Categories	Crystallography; Materials Science, Multidisciplinary; Physics, Applied
Author-Email	peter.galenko@uni-jena.de
ResearcherID-Numbers	Alexandrov, Dmitri/D-2516-2016
ORCID-Numbers	Alexandrov, Dmitri/0000-0002-6628-745X
Number-of-Cited-References	45
Usage-Count-Last-180-days	6
Usage-Count-Since-2013	13
Journal-ISO	J. Cryst. Growth
Doc-Delivery-Number	EE4QT