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Directional solidification of aluminium–copper alloys

Directional solidification experiments have been carried out on different Al–Cu alloys as a function of solidification parameters, temperature gradient G, growth rate V, and composition C 0. The specimens were solidified under steady state conditions with a constant temperature gradient (7.4 K mm −1...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2002-04, Vol.327 (2), p.167-185
Main Authors: Gunduz, M, Cadirli, E
Format: Article
Language:English
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Summary:Directional solidification experiments have been carried out on different Al–Cu alloys as a function of solidification parameters, temperature gradient G, growth rate V, and composition C 0. The specimens were solidified under steady state conditions with a constant temperature gradient (7.4 K mm −1) at a wide range of growth rates (9–490 μm s −1) and with a constant growth rate of 9.5 μm s −1 at a wide range of temperature gradients (1.0–7.4 K mm −1). Microstructural parameters, the primary dendrite arm spacing λ 1, secondary dendrite arm spacing λ 2, dendrite tip radius R, mushy zone depth d were measured and expressed as functions of solidification parameters, G, V and C 0 by using a linear regression analysis. The results were in good agreement with previous experimental work and current theoretical models suggested for dendritic growth.
ISSN:0921-5093
1873-4936
DOI:10.1016/S0921-5093(01)01649-5