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Liquid Permeability Measurements in Solidifying Aluminum-Copper Alloys [electronic resource].

Published
Washington, D.C : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
8 pages : digital, PDF file
Additional Creators
Oak Ridge National Laboratory, United States. Department of Energy. Office of Energy Efficiency and Renewable Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Measurements of liquid permeability in the mushy zones of AI-15.42% Cu and Al-8.68% Cu alloy samples have been performed isothermally just above the eutectic temperature, using eutectic liquid as the fluid. A modified method has been developed to determine the specific permeability, K{sub s}, as a function of time during the test from the data collected on these alloys. Factors affecting permeability measurements are discussed. Permeabilities are observed to vary throughout the experiment. This is attributed to microstructural coarsening and channeling that occurs in the sample during the experiment. The permeability is related to the microstructure of the sample using the Kozeny-Carman equation. The correlation between the measured K{sub s}, liquid fraction, g{sub L} and the specific solid surface area, S{sub v}, improves markedly when compared to previous studies in which microstructural coarsening was ignored.
Report Numbers
E 1.99:ornl/cp-100520
E 1.99: ee 04 01 00 0
ee 04 01 00 0
ornl/cp-100520
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Note
Published through SciTech Connect.
02/28/1999.
"ornl/cp-100520"
" ee 04 01 00 0"
"EE 04 01 00 0"
TMS Annual Meeting, San Diego, CA (US), 02/28/1999--03/04/1999.
Duncan, A.J.; Viswanathan, S.; Han, Q.
Funding Information
AC05-96OR22464
View MARC record | catkey: 14073548