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Constitutive Behavior of Semi-Solid Metal Alloy Slurries

Published online by Cambridge University Press:  15 February 2011

Pratyush Kumar ,
Christophe L. Martin  and
Stuart Brown
Pratyush Kumar
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology, Room 8-106 77 Massachusetts Avenue Cambridge, Massachusetts 02139
Christophe L. Martin
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology, Room 8-106 77 Massachusetts Avenue Cambridge, Massachusetts 02139
Stuart Brown
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology, Room 8-106 77 Massachusetts Avenue Cambridge, Massachusetts 02139
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Abstract

The constitutive flow behavior of semi-solid metal alloy slurries has been modeled using an internal variable framework. The formulation represents the primary flow response of these materials: history dependence (thizotvopy), steady state shear rate thinning (pseudoplasticity) and constant internal structure shear rate thickening (dilatancy). The flow response at any given structure has been decoupled from structure-dependent response in carefully controlled rapid transient experiments done on a computer-controlled, high temperature, Couette geometry rheomneter. The data for Sn-15wt%Pb correlates well with the model.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 289: Symposium M – Flow and Microstructure of Dense Suspensions , 1992 , 213
Copyright
Copyright © Materials Research Society 1993

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References

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