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Particle sedimentation during processing of liquid metal-matrix composites

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Abstract

A novel electrical resistance probe technique to measure thein situ volume fraction of ceramic particles in molten metals was applied to the measurement of sedimentation rates of 90-µm-diameter silicon carbide particles in molten aluminum. The results indicate that the rate strongly depends on volume fraction; the time to clarify a 0.15-m depth increased from approximately 60 to 500 seconds as the particle volume fraction increased from 0.05 to 0.30. Maps showing the changes in volume fraction throughout the melt were generated. A multiphase hydrodynamic model was developed to describe the sedimentation. Using volume fraction-dependent drag coefficients from work in aqueous systems, the model was able to simulate the experimental results remarkably well. The experimental and modeling results indicate that there was little agglomeration or network formation during sedimentation. The implications of the results for solidification and particle pushing are discussed.

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References

  1. A.D. McLeod, C. Gabryel, D.J. Lloyd, and P. Morris: inProcessing of Ceramic and Metal Matrix Composites, H. Mostaghaci, ed., CIM Conf. of Metallurgists, Aug. 20–24, 1989, Pergamon Press, New York, NY, pp. 228–35.

    Google Scholar 

  2. G.S. Hanumanth and G.A. Irons: inFabrication of Particulates Reinforced Metal Composites, J. Masounave and F.G. Hamel, eds., ASM INTERNATIONAL, Metals Park, OH, 1990, pp. 41–46.

    Google Scholar 

  3. M. Acta and F. Ajersch: inMetal and Ceramic Matrix Composites: Processing, Modelling and Mechanical Behaviour, R.B. Bhagat, A.H. Clauer, P. Kumar, and A.M. Ritter, eds., TMS, Warrendale, PA, 1990, pp. 337–50.

    Google Scholar 

  4. R.B. Bird, W.E. Stewart, and E.L. Lightfoot:Transport Phenomena, John Wiley and Sons Inc., New York, NY, 1960, p. 60.

    Google Scholar 

  5. G.J. Kynch:Trans. FarActay Soc., 1952, vol. 48, pp. 166–76.

    Article  CAS  Google Scholar 

  6. F.M. Tiller:AlChEJ., 1981, vol. 27, pp. 823–29.

    CAS  Google Scholar 

  7. J.F. Richardson and W.N. Zaki:Trans. Inst. Chem. Eng., 1954, vol. 32, pp. 35–53.

    CAS  Google Scholar 

  8. G.B. Wallis:Proc. Symp. on Interactions between Fluids and Particles, Institute of Chemical Engineers, London, 1962, vol. 9, pp. 9–16.

    Google Scholar 

  9. S. Lafreniere and G.A. Irons:Int. Symp. on Production, Refining, Fabrication and Recycling of Light Metals, Hamilton, ON, Canada, Aug. 1990, CIM, pp. 177–86.

    Google Scholar 

  10. D.C. Dixon:AIChEJ., 1980, vol. 26, pp. 471–77.

    Article  Google Scholar 

  11. Y.T. Shih, D. Gidaspow, and D.T. Wasan:Powder Technol., 1987, vol. 50, pp. 201–15.

    Article  CAS  Google Scholar 

  12. G. Hetsroni:Handbook of Multiphase Systems, McGraw-Hill, New York, NY, 1982.

    Google Scholar 

  13. D. Gidaspow:Appl. Mech. Rev., 1986, vol. 39, pp. 1–22.

    Article  Google Scholar 

  14. R.F. Sincovec and N.K. Madsen:ACM Trans. Mathematical Software, 1975, vol. 1, pp. 232–60.

    Article  Google Scholar 

  15. A.C. Hindmarsh: inScientific Computing, R.S. Stepleman, M. Carver, R. Peskin, W.F. Ames, and R. Vichnevetsky, eds., North-Holland, Amsterdam, 1983, pp. 55–64.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, McMaster University, L8S 4L7, Hamilton, ON, Canada

    G. S. Hanumanth (Research Associate)

  2. Department of Mining and Metallurgy, Laval University, PQ, Canada

    G. A. Irons (Professor and Chairman) & S. Lafreniere (Graduate Student)

Authors
  1. G. S. Hanumanth
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  2. G. A. Irons
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  3. S. Lafreniere
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Formerly Graduate Student, McMaster University

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Hanumanth, G.S., Irons, G.A. & Lafreniere, S. Particle sedimentation during processing of liquid metal-matrix composites. Metall Trans B 23, 753–763 (1992). https://doi.org/10.1007/BF02656454

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