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Influence of convection on rod spacing of eutecticsThis paper describes a three-dimensional numerical model to study the influence of convection on the rod-like microstructure of an eutectic system. This model is based on a central finite difference approach. By applying it, the average concentration near the solid/liquid interface of a growing rod-like eutectic was determined for eutectic compositions C(e) of 0.03, 0.05, and 0.10. Following Jackson and Hunt (1966), the average interfacial composition was converted to a change of undercooling at the interface and, finally, to spacing between the rods. The change in rod spacing with increasing intensity of convection was calculated assuming the eutectic grows at minimum interfacial undercooling. It was confirmed that an increase in convection should coarsen the microstructure (i.e., the rod spacing increases with increasing intensity of stirring).
Document ID
19910051310
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Caram, R.
(Clarkson Univ. Potsdam, NY, United States)
Chandrasekhar, S.
(Clarkson Univ. Potsdam, NY, United States)
Wilcox, W. R.
(Clarkson University Potsdam, NY, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Journal of Crystal Growth
Volume: 106
ISSN: 0022-0248
Subject Category
Solid-State Physics
Accession Number
91A35933
Funding Number(s)
CONTRACT_GRANT: NAG8-480
Distribution Limits
Public
Copyright
Other

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