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Growth of noncrystallographic dendrites

Published online by Cambridge University Press:  31 January 2011

L.M. Fabietti
Affiliation:
Department of Materials Science and Engineering and the International Center for Micropyretics, University of Cincinnati, Cincinnati, Ohio 45221-0012
J.A. Sekhar
Affiliation:
Department of Materials Science and Engineering and the International Center for Micropyretics, University of Cincinnati, Cincinnati, Ohio 45221-0012
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Abstract

First time experimental evidence is presented for the steady state growth of dendrites away from their normal crystallographic growth directions. The evidence is shown for transparent dendrites in the succinonitrile system, which are induced to grow along wetting surfaces. A method for the quantitative characterization of the tips of such dendrites is described and the differences in the secondary arm formation between off-axis and regular dendrites are recorded. The scientific and technological implications of this finding are examined.

Type
Rapid Communications
Copyright
Copyright © Materials Research Society 1992

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References

1.Kurz, W. and Fisher, D. J., Fundamentals of Solidification (Trans Tech Publication, Aedermannsdorf, Switzerland, 1989).Google Scholar
2.Glicksman, M. E., Schaefer, R. J., and Ayers, J. D., Metall. Trans. A 7, 1747 (1976).Google Scholar
3.Hunt, J. D., Jackson, K. A., and Brown, H., Rev. Sci. Instrum. 37, 805 (1966).Google Scholar
4.Mason, J. T. and Eshelman, M. A., Rep. IS-4906 (Ames Laboratory, Ames, IA, 1986).Google Scholar
5.Sekhar, J. A. and Trivedi, R., Mater. Sci. and Engg. A 114, 133 (1989).Google Scholar
6.Somboonsuk, K., Mason, J. T., and Trivedi, R., Metall. Trans. A 15, 967 (1984).Google Scholar
7.Jackson, K. A., Uhlmann, D. R., and Hunt, J. D., J. Cryst. Growth 1, 136 (1967).Google Scholar
8.Amar, M. Ben and Pomeau, Y., Europhys. Lett. 2 (4), 307 (1986).Google Scholar
9.Amar, M. Ben and Pelce, P., Phys. Rev. A 39 (8), 4263 (1989).Google Scholar
10.Meiron, D. I., Phys. Rev. A 33 (4), 2704 (1986).Google Scholar
11.Pelce, P. and Pomeau, Y., Studies in Applied Mathematics 74, 245 (1986).Google Scholar
12.Barbieri, A., Hong, D. C., and Langer, J. S., Phys. Rev. A 35 (4), 1802 (1987).CrossRefGoogle Scholar
13.Newman, A. W., Adv. Colloid Interface Sci. 4, 105 (1974).Google Scholar
14.Solidification of Metal Matrix Composites, edited by Rohatgi, P. (TMS, Warrendale, PA, 1990).Google Scholar
15.Lacalli, T. C., Philos. Trans. R. Soc. Lond. B 294, 547 (1981).Google Scholar
16.Korber, C., Quart. Rev. Biophysics 21 (2), 229 (1988).Google Scholar
17.Kurz, W. and Trivedi, R., Acta Metall. 38, 1 (1990).Google Scholar
18.Canright, D. and Davis, S. H., Metall. Trans. A 20, 225 (1989).Google Scholar