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Published in: Journal of Materials Science 11/2007

01-06-2007

The effect of varying chill surface roughness on interfacial heat transfer during casting solidification

Authors: William David Griffiths, Ramazan Kayikci

Published in: Journal of Materials Science | Issue 11/2007

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Abstract

Experiments to investigate interfacial heat transfer mechanisms during casting solidification were carried out by varying the surface roughness of a Cu chill used to bring about unidirectional solidification of an Al-4.5 wt.% Cu alloy. Little variation in interfacial heat transfer coefficient with varying chill surface roughness was found, confirming previously published results. Examination of the as-cast surface of the casting showed the presence of predendritic contact areas, and also that the casting surface roughness did not form as a replica of the chill surface, as has often been proposed. Rather, the casting surface roughness was consistently greater than that of the chill, but varied little in the experiments. A sum surface roughness parameter was devised to characterise the casting–chill interface that included the roughness of both surfaces. The value of this parameter was strongly influenced by the greater roughness of the casting surface, rather than the chill surface roughness, and therefore also varied little in the experiments. This lack of variation in the casting surface roughness and hence the sum surface roughness parameter showed how interfacial heat transfer should be more strongly influenced by the greater roughness of the casting surface than of the chill surface, and explains why the interfacial heat transfer coefficient was not strongly influenced by the chill surface roughness in these types of experiments.

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Literature
1.
2.
5.
go back to reference Loulou T, Artyukhin EA, Bardon JP (1999) Int J Heat Mass Trans 2129 Loulou T, Artyukhin EA, Bardon JP (1999) Int J Heat Mass Trans 2129
8.
9.
go back to reference Biloni H, Chalmers B (1965) Trans Met Soc (AIME) 233:373 Biloni H, Chalmers B (1965) Trans Met Soc (AIME) 233:373
11.
12.
13.
14.
go back to reference Sharma DGR, Krishnan M (1991) AFS Trans 99:429 Sharma DGR, Krishnan M (1991) AFS Trans 99:429
Metadata
Title
The effect of varying chill surface roughness on interfacial heat transfer during casting solidification
Authors
William David Griffiths
Ramazan Kayikci
Publication date
01-06-2007
Published in
Journal of Materials Science / Issue 11/2007
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-006-0388-x

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