Dynamic stability analysis of the solidification of binary melts in the presence of a mushy region: changeover of instability / Alexandrov DV,Ivanov AO // JOURNAL OF CRYSTAL GROWTH. - 2000. - V. 210, l. 4. - P. 797-810.

ISSN/EISSN:

0022-0248 / нет данных

Type:

Article

Abstract:

A dynamic linear instability analysis of steady-state binary melt solidification with a mushy region has been carried out. Such an instability differs from a conventional morphological one of a planar solid-liquid interface and is connected with the perturbations in the steady-state solidification velocity. Solidification with a narrow mushy region has been revealed to be absolutely unstable with a monotonous instability of a ``hard{''} type. An increase of the mushy region width leads to an instability changeover from the ``hard{''} type to the oscillatory ``soft{''} one. Both the critical changeover width and the neutral stability curves have been determined as the functions of relevant physical and operating parameters. The steady-state solidification regime with a broad mushy region is absolutely stable. Thus, the mushy region width has been shown to represent a stabilizing factor. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

Author keywords:

solidification; instabilities; solid-liquid transitions ALLOYS; CONVECTION; LAYERS

DOI:

10.1016/S0022-0248(99)00763-0

Web of Science ID:

ISI:000085998900049

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	ALLOYS; CONVECTION; LAYERS
Research-Areas	Crystallography; Materials Science; Physics
Web-of-Science-Categories	Crystallography; Materials Science, Multidisciplinary; Physics, Applied
ResearcherID-Numbers	Alexandrov, Dmitri/D-2516-2016 Ivanov, Alexey/E-4442-2011
ORCID-Numbers	Alexandrov, Dmitri/0000-0002-6628-745X Ivanov, Alexey/0000-0001-8239-4039
Number-of-Cited-References	18
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	3
Journal-ISO	J. Cryst. Growth
Doc-Delivery-Number	295ZQ