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Enthalpies of a binary alloy during solidificationThe purpose of the paper is to present a method of calculating the enthalpy of a dendritic alloy during solidification. The enthalpies of the dendritic solid and interdendritic liquid of alloys of the Pb-Sn system are evaluated, but the method could be applied to other binaries, as well. The enthalpies are consistent with a recent evaluation of the thermodynamics of Pb-Sn alloys and with the redistribution of solute in the same during dendritic solidification. Because of the heat of mixing in Pb-Sn alloys, the interdendritic liquid of hypoeutectic alloys (Pb-rich) of less than 50 wt pct Sn has enthalpies that increase as temperature decreases during solidification.
Document ID
19890035188
Document Type
Reprint (Version printed in journal)
Authors
Poirier, D. R. (Arizona Univ. Tucson, AZ, United States)
Nandapurkar, P. (Arizona, University Tucson, United States)
Date Acquired
August 14, 2013
Publication Date
December 1, 1988
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 19A
ISSN: 0360-2133
Subject Category
METALLIC MATERIALS
Funding Number(s)
CONTRACT_GRANT: NAG3-723
Distribution Limits
Public
Copyright
Other