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TECHNICAL PAPERS

Mold Surface Wavelength Effect on Gap Nucleation in Solidification

[+] Author and Article Information
L. G. Hector

Surface Science Division, Alcoa Technical Center, Alcoa Center, PA 15069

J. A. Howarth

Department of Applied Mathematics, University of Hull, Hull HU6 7RX, England

O. Richmond

Alcoa Technical Center, Alcoa Center, PA 15069

W.-S. Kim

Department of Mechanical Engineering, Hanyang University, Seoul 133, Korea

J. Appl. Mech 67(1), 155-164 (Oct 12, 1999) (10 pages) doi:10.1115/1.321160 History: Received January 12, 1999; Revised October 12, 1999
Copyright © 2000 by ASME
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References

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Figures

Grahic Jump Location
Pure metal shell solidifying on a rigid mold with a sinusoidal surface
Grahic Jump Location
Evolution of Ptr at selected λ for pure aluminum as predicted by short time solution and numerical solution. Po=8000 Pa, a=1.0 μm, and Ro=10−3m2 sec°C/J. Note that the short time solution predicts a fictitious turn around in Ptr for all cases.
Grahic Jump Location
Evolution of Ptr at selected λ for pure aluminum solidification with Po=10,000 Pa, a=1.0 μm, Ro=10−3m2 sec°C/J (numerical solution)
Grahic Jump Location
Evolution of Ptr at selected λ for pure iron solidification with Po=10,000 Pa, a=1.0 μm, Ro=10−3m2 sec°C/J (numerical solution)
Grahic Jump Location
Mean shell thickness variation with λ for pure aluminum solidification at selected Po for a=1.0 μm, Ro=10−3m2 sec°C/J (numerical solution)
Grahic Jump Location
Mean shell thickness variation with λ for pure iron solidification at selected Po for a=1.0 μm, Ro=10−3m2 sec°C/J (numerical solution)

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