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Application of a time-dependent constitutive model to rheocast systems

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Abstract

A mathematical model has been developed to describe the velocity field in an agitated Al- 5Cu alloy in which B4C particles were suspended at different loading rates of up to 40 %. The material system was agitated by means of an electromagnetic rotary stirrer. The non- Newtonian behavior of the melt/solid slurry was allowed for using two models: the steady- state model of Joly and Flemings and the model of Brown, which takes account of time- dependent behavior. Calculations have shown that the two models behave similarly at high shear rates. In addition, if agitation was discontinued, very little time was required for the velocity (and hence the fluidity) of the slurry to decay.

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References

  1. M.C. Flemings and R. Mehrabian,Trans. Am. Found. Soc. B, Vol 17B, 1973,p 119

    Google Scholar 

  2. P.A. Joly, Ph.D. thesis, Department of Materials Science and Engineering, Massachusetts Institute of Technology, 1974

  3. V. Laxmanan, Ph.D. thesis, Department of Materials Science and Engineering, Massachusetts Institute of Technology, 1979

  4. O.J. Ilegbusi and J. Szekely,Trans. Iron Steel Inst. Jpn., Vol 28, 1988, p 97

    CAS  Google Scholar 

  5. O.J. Ilegbusi and J. Szekely,Metall. Trans. B, Vol 21B, 1990, p 183

    CAS  Google Scholar 

  6. O.J. Ilegbusi and J. Szekely,Iron Steel Inst. Jpn. Int., Vol 29 (No 6), 1989, p 462

    Google Scholar 

  7. O.J. Ilegbusi and J. Szekely,Iron Steel Inst. Jpn. Int., Vol 30 (No 5), 1990, p 372

    CAS  Google Scholar 

  8. S. Brown, An Internal Variable Constitutive Model for Semi- solid Slurries,Proc. 5th Int. Conf. Modeling of Casting, Welding and Advanced Solidification Processes (Davos, Switzerland) 16-21 Sept 1990, TMS.p 31–38

  9. N.A. Frankel and A. Acrivos,Chem. Eng. Sci., Vol 22, 1967 p 847

    Article  Google Scholar 

  10. D.B. Spalding,Math. Comput. Simulation, Vol XII, 1981, p 267

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Mechanical, Industrial and Manufacturing Engineering, Northeastern University, 02115, Boston, MA, USA

    O.J Llegbusi

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  1. O.J Llegbusi
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Llegbusi, O. Application of a time-dependent constitutive model to rheocast systems. JMEP 5, 117–123 (1996). https://doi.org/10.1007/BF02647279

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  • DOI: https://doi.org/10.1007/BF02647279

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