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Supercooling effects in Cu-10 wt pct Co alloys solidified at different cooling ratesElectromagnetic levitation and electron beam surface melting were employed to study the effects of supercooling and cooling rate on the solidification of Cu-10 wt pct Co alloys. Two major effects were observed in the supercooled alloys: the nucleation of a metastable copper-rich phase which contains 13 wt pct to 20 wt pct Co in samples supercooled between 105 and 150 K and liquid phase separation which occurs in samples supercooled 150 K or more. The microstructure of the electron beam melted surfaces consisted of very fine spheres which were similar to those of the sample supercooled more than 150 K but with a refined microstructure. The results indicate that a dynamic bulk supercooling of 150 K may exist in the molten pool during the solidification of electron beam melted surfaces.
Document ID
19920059050
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Munitz, A.
(Israel Atomic Energy Commission, Nuclear Research Centre Beersheba, United States)
Elder-Randall, S. P.
(Gould Lewis and Proctor Consulting Engineers Gainesville, FL, United States)
Abbaschian, R.
(Florida, University Gainesville, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1992
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 23A
Issue: 6, Ju
ISSN: 0360-2133
Subject Category
Metallic Materials
Accession Number
92A41674
Distribution Limits
Public
Copyright
Other

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