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Constitutive Behavior of Semi-Solid Metal Alloy Slurries

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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 (thixotropy), 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 rheometer. The data for Sn-15wt% Pb correlates well with the model.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Room 8–106, 77 Massachusetts Avenue, Cambridge, Massachusetts, 02139

    Pratyush Kumar, Christophe L. Martin & Stuart Brown

Authors
  1. Pratyush Kumar
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  2. Christophe L. Martin
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  3. Stuart Brown
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Kumar, P., Martin, C.L. & Brown, S. Constitutive Behavior of Semi-Solid Metal Alloy Slurries. MRS Online Proceedings Library 289, 213–219 (1992). https://doi.org/10.1557/PROC-289-213

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  • DOI: https://doi.org/10.1557/PROC-289-213

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