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Particle Dynamic Simulation of Semi-Solid Metal Rheology

Published online by Cambridge University Press:  21 March 2011

Andrew M. Mullis
Andrew M. Mullis*
Affiliation:
School of Materials, University of Leeds, Leeds LS2 9JT, UK.
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Abstract

Models of semi-solid processing currently utilise constitutive equations to describe slurry rheology. However, using the techniques of molecular dynamics it may be possible to go beyond this approach to obtain direct relationships between applied shear rates, the resultant microstructural changes and rheology.

The results of a simple molecular dynamics simulation of semi-solid flow within a Couette rheometer are presented and compared with experimental data for the system Sn -15% Pb. We find that the model correctly predicts the apparent viscosity under steady state conditions, up to solid fractions of ≈ 40%.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 677: Symposium AA – Advances in Materials Theory and Modeling–Bridging Over Multiple-Length and Time Scales , 2001 , AA7.18
Copyright
Copyright © Materials Research Society 2001

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References

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