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Time dependence of tip morphology during cellular/dendritic arrayed growth

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Abstract

Succinonitrile-1.9 wt pct acetone has been directionally solidified in 0.7 X 0.7-cm-square cross section pyrex ampoules in order to observe the cell/dendrite tip morphologies, not influenced by the “wall effects,” which are present during growth in the generally used thin (about 200 μm) crucibles. The tips do not maintain a steady-state shape, as is generally assumed. Instead, they fluctuate within a shape envelope. The extent of fluctuation increases with decreasing growth speed, as the micro structure changes from the dendritic to cellular. The influence of natural convection has been examined by comparing these morphologies with those grown, without convection, in the thin ampoules.

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References

  1. H. Esaka and W. Kurz:J. Cryst. Growth, 1985, vol. 72, pp. 578–84.

    Article  CAS  Google Scholar 

  2. R. Trivedi:Metall. Trans. A, 1984, vol. 15A, pp. 977–82.

    CAS  Google Scholar 

  3. R. Trivedi and K. Somboonsuk:Acta Metall., 1985, vol. 33, pp. 1061–68.

    Article  CAS  Google Scholar 

  4. R. Trivedi and J.T. Mason:Metall. Trans. A, 1991, vol. 22A, pp. 235- 49.

    Google Scholar 

  5. D. Venugopalan and J.S. Kirkaldy:Acta Metall., 1984, vol. 32, pp. 893–906.

    Article  CAS  Google Scholar 

  6. M.H. Burden and J.D. Hunt:J. Cryst. Growth, 1974, vol. 22, pp. 99–116.

    Article  CAS  Google Scholar 

  7. R. Trivedi:J. Cryst. Growth, 1980, vol. 49, pp. 219–32.

    Article  CAS  Google Scholar 

  8. V. Laxmanan:J. Cryst. Growth, 1986, vol. 83, pp. 573–90.

    Article  Google Scholar 

  9. J.S. Kirkaldy:Scripta Metall., 1980, vol. 14, p. 739.

    Article  Google Scholar 

  10. A. Karma and P. Pelce:Phys. Rev. A, 1989, vol. 39, pp. 4162–69.

    Article  Google Scholar 

  11. L.H. Unger, M.J. Bennett, and R.A. Brown:Phys. Rev. B, 1985, vol. 31, pp. 5923–40.

    Article  Google Scholar 

  12. J.D. Hunt and D.G. McCartney:Acta Metall., 1987, vol. 35, pp. 89- 99.

    Article  Google Scholar 

  13. S.Z. Lu and J.D. Hunt:J. Cryst. Growth, 1992, vol. 123, pp. 17–34.

    Article  Google Scholar 

  14. J.A. Warren and J.S. Langer:Phys. Rev. A, 1990, vol. 42, pp. 3518- 25.

    Article  Google Scholar 

  15. L.X. Liu and J.S. Kirkaldy:Scripta Metall. Mater., 1993, vol. 28, pp. 1029–34.

    Article  CAS  Google Scholar 

  16. M.A. Eshelman, V. Seetharaman, and R. Trivedi:Acta Metall., 1988, vol. 36, pp. 1165–74.

    Article  CAS  Google Scholar 

  17. S.N. Tewari and M.A. Chopra:J. Cryst. Growth, 1992, vol. 18, pp. 183–92.

    Article  Google Scholar 

  18. J.T.C. Lee, K. Tsiveriotis, and R.A. Brown:J. Cryst. Growth, 1992, vol. 121, pp. 536–42.

    Article  Google Scholar 

  19. W. Kurz and R. Trivedi:Acta Metall., 1990, vol. 38, pp. 1–17.

    Article  CAS  Google Scholar 

  20. S.N. Tewari and R. Trivedi:Microgravity Sd. Technol, 1991, vol. 4, pp. 240–44.

    CAS  Google Scholar 

  21. J. Lipton, M.E. Glicksman, and W. Kurtz:Mater. Sci. Eng., 1984, vol. 65, pp. 57–63.

    Article  CAS  Google Scholar 

  22. W.W. Mullins and R.F. Sekerka:J. Appl. Phys., 1963, vol. 34, pp. 444–51.

    Article  Google Scholar 

  23. J.J. Favier and A. Rouzaud:J. Cryst. Growth, 1987, vol. 64, pp. 367- 79.

    Article  Google Scholar 

  24. J.S. Langer:Metall. Trans. A, 1984, vol. 15A, pp. 961–66.

    CAS  Google Scholar 

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Authors and Affiliations

  1. Chemical Engineering Department, Cleveland State University, 44115, Cleveland, OH

    H. Song (Research Associate) & S. N. Tewari (Professor)

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  1. H. Song
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  2. S. N. Tewari
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Song, H., Tewari, S.N. Time dependence of tip morphology during cellular/dendritic arrayed growth. Metall Mater Trans A 27, 1111–1119 (1996). https://doi.org/10.1007/BF02649779

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  • DOI: https://doi.org/10.1007/BF02649779

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