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Two-liquid Separation in Undercooled Co-Cu Alloys

Published online by Cambridge University Press:  11 February 2011

X. Y. Lu ,
M. Kolbe  and
D. M. Herlach
X. Y. Lu
Affiliation:
Institute of Space Simulation, German Aerospace Center (DLR), D-51170 Cologne, Germany Department of Applied Physics, Northwestern Polytechnical University, P O Box 624, Xian, 710072, P. R. China
M. Kolbe
Affiliation:
Institute of Space Simulation, German Aerospace Center (DLR), D-51170 Cologne, Germany
D. M. Herlach
Affiliation:
Institute of Space Simulation, German Aerospace Center (DLR), D-51170 Cologne, Germany
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Abstract

Electromagnetic levitation and drop tube processing were used to investigate the solidification behaviour of Co50Cu50 alloys. Deep undercooling was achieved down to 241 K, the alloy melts separated into Co-rich L1-phase and Cu-richL2-phase before solidification. In drop tube processing, the Cu-rich phases disperse morehomogeneously than in EML. This is due to the reduced gravity and high cooling rate during free fall and solidification.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 754: Symposium CC – Supercooled Liquids, Glass Transition and Bulk Metallic Glasses , 2002 , CC3.17
Copyright
Copyright © Materials Research Society 2003

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References

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