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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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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 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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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. |
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ISSN: | 0921-5093 1873-4936 |
DOI: | 10.1016/S0921-5093(01)01649-5 |