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Modeling of porosity during spray forming: Part II. Effects of atomization gas chemistry and alloy compositions

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Abstract

In this article, the effects of gas chemistry and alloy composition on the level of porosity in deposited materials are investigated by using a porosity model established in Part I of this article. The calculated results reveal that atomization gas chemistry has a significant influence on the level of porosity during spray forming, which can be rationalized on the basis of the influence of gas properties such as gas density, viscosity, and gas constant on the melt flow rate. The alloy properties that predominantly affect the variation of porosity with melt flow rate include melt viscosity, density, surface tension, solvent melting point, liquidus temperature, and equilibrium partition coefficient. A material property factor, μ mγm/ρ 2 m , plays an important role in determining the processing conditions required to attain a minimum amount of porosity in deposited materials.

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References

  1. M.C. Flemings: Solidification Processing, McGraw-Hill, New York, NY, 1974, p. 35.

    Google Scholar 

  2. D. Emadi, J.E. Gruzleski, and J.M. Toguri: Metall. Trans. B, 1993, vol. 24B, pp. 1055–63.

    CAS  Google Scholar 

  3. K. Kubo and R. D. Pehlke: Metall. Trans. B, 1985, vol. 16B, pp. 359–66.

    CAS  Google Scholar 

  4. G.K. Sigworth and C. Wang: Metall. Trans. B, 1993, vol. 24B, pp. 349–64.

    CAS  Google Scholar 

  5. E.L. Crow and K. Shimizu: Lognormal Distributions: Theory and Applications, Marcel Dekker, New York, NY, 1988, p. 2.

    Google Scholar 

  6. J.E. Smith and M.L. Jordan: J. Colloid. Sci., 1964, vol. 19, pp. 549–59.

    Article  Google Scholar 

  7. A.H. Lefebvre: Atomizations and Spray, Taylor & Francis, Bristol, PA, 1989, p. 85.

    Google Scholar 

  8. K. Lubanska: J. Met., 1970, vol. 32, pp. 45–49.

    Google Scholar 

  9. P.S. Grant, B. Cantor, and L. Katgerman: Acta Metall. Mater., 1993, vol. 41, pp. 3109–18.

    Article  CAS  Google Scholar 

  10. A. Lawley: Atomization: the Production of Metal Powders, MPIF, Princeton, NJ, 1992, p. 74.

    Google Scholar 

  11. E.J. Lavernia, T.S. Srivatsan, and R.H. Rangel: Atomization and Sprays, 1992, vol. 2, pp. 253–74.

    CAS  Google Scholar 

  12. H.Y. Sohn and C. Moreland: Can. J. Chem. Eng., 1968, vol. 46, pp. 162–67.

    Article  Google Scholar 

  13. R.J. Wakeman: Powder Technol., 1975, vol. 11, pp. 297–99.

    Article  Google Scholar 

  14. P. Mathur, S. Annavarapu, D. Apelian, and A. Lawley: Mater. Sci. Eng. A, 1991, vol. 142, pp. 261–76.

    Article  Google Scholar 

  15. B.P. Bewlay and B. Cantor: Metall. Trans. B, 1990, vol. 21B, pp. 899–912.

    CAS  Google Scholar 

  16. B.P. Bewlay and B. Cantor: J. Mater. Res., 1991, vol. 6, pp. 1433–54.

    CAS  Google Scholar 

  17. E.-S. Lee and S. Ahn: Acta Metall. Mater., 1994, vol. 42, pp. 3231–43.

    Article  CAS  Google Scholar 

  18. P.S. Grant, W.T. Kim, and B. Cantor: Mater. Sci. Eng. A, 1991, vol. 134, pp. 1111–14.

    Article  Google Scholar 

  19. P.S. Grant, B. Cantor, and L. Katgerman: Acta Metall. Mater., 1993, vol. 41, pp. 3097–3108.

    Article  CAS  Google Scholar 

  20. C. Cheng, S. Annavarapu, and R. Doherty: Spray Forming 2—Proc. 2nd Int. Conf. on Spray Forming, J.V. Wood, ed., Woodhead Publishing Limited, Cambridge, United Kingdom 1993, pp. 67–83.

    Google Scholar 

  21. D.R. Lide: The CRC Chemistry and Physics Handbook, CRC Press, Ann Arbor, MI, 1995.

    Google Scholar 

  22. E.A. Brandes and G.B. Brook: in Smithells Metals Reference Book, Butterworth-Heinemann, Oxford, United Kingdom, 1992.

    Google Scholar 

  23. D. Turnbull: J. Appl. Phys., 1950, vol. 21, pp. 1022–28.

    Article  CAS  Google Scholar 

  24. T.B. Massalski: Binary Alloy Phase Diagram, ASM, Materials Park, OH, 1982.

    Google Scholar 

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Author notes

  1. Weidong Cai (Research Associate, the Chemical and Biochemical Engineering)

    Present address: the Department of Chemical and Biochemical Engineering and Materials Science, University of California, Irvine, 92697, Irvine, CA

Authors and Affiliations

  1. the Department of Electrical and Computer Engineering, University of California, Irvine

    Weidong Cai (Research Associate, the Chemical and Biochemical Engineering)

  2. the Department of Chemical and Biochemical Engineering and Materials Science, University of California, Irvine, 92697, Irvine, CA

    Enrique J. Lavernia (Professor)

Authors
  1. Weidong Cai
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  2. Enrique J. Lavernia
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Cai, W., Lavernia, E.J. Modeling of porosity during spray forming: Part II. Effects of atomization gas chemistry and alloy compositions. Metall Mater Trans B 29, 1097–1106 (1998). https://doi.org/10.1007/s11663-998-0079-x

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  • DOI: https://doi.org/10.1007/s11663-998-0079-x

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