Hostname: page-component-77c89778f8-9q27g Total loading time: 0 Render date: 2024-07-17T08:08:06.988Z Has data issue: false hasContentIssue false
  • English
  • Français

The crystallization and growth of AlB2 single crystal flakes in aluminum

Published online by Cambridge University Press:  31 January 2011

C. Deppisch ,
G. Liu ,
A. Hall ,
Y. Xu ,
A. Zangvil ,
J. K. Shang  and
J. Economy
C. Deppisch
Affiliation:
Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801
G. Liu
Affiliation:
Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801
A. Hall
Affiliation:
Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801
Y. Xu
Affiliation:
Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801
A. Zangvil
Affiliation:
Department of Materials Science and Engineering, and Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801
J. K. Shang
Affiliation:
Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 6180
J. Economy
Affiliation:
Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 6180
Get access

Abstract

An in situ high temperature heat treatment was used to investigate the crystallization and growth behavior of AlB2 flakes in aluminum. Aluminum samples containing 1.8% boron were heated above the liquidus and then rapidly cooled through the Al(L) + AlB12 region to avoid the formation of AlB12 crystals. Subsequently, a homogeneous distribution of high aspect ratio AlB2 flakes crystallized upon holding below the peritectic transition temperature. Growth rate in the (a) and (c) dimensions increased during elevated hold temperatures below the peritectic transition temperature. Surprisingly, faster cooling rates from above the liquidus to room temperature resulted in thinner, wider flakes. Similar to graphite this phenomenon is believed to result from a need to accommodate a changing misfit strain energy between the solidifying aluminum and the growing AlB2 flakes.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 12 , December 1998 , pp. 3485 - 3498
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Kamat, S. V., Hirth, J. P., and Mehrabian, R., Acta Metall. 37, 2395 (1989).CrossRefGoogle Scholar
2.McDanels, D. L., Metall. Trans. 16A, 1105 (1985).CrossRefGoogle Scholar
3.Papazian, J. M. and Adler, P. N., Metall. Trans. 21A, 401 (1990).CrossRefGoogle Scholar
4.Nair, S. V., Tien, J. K., and Bates, R. C., Int. Met. Rev. 30, 275 (1985).CrossRefGoogle Scholar
5.Levy, A. and Papazian, J. M., Metall. Trans. 21A, 411 (1990).CrossRefGoogle Scholar
6.Hosking, F. M., Portillo, F. F., Wunderlin, R., and Mehrabian, R., J. Mater. Sci. 17, 477 (1982).CrossRefGoogle Scholar
7.Christman, T., Needleman, A., and Suresh, S., Acta Metall. Mater. 37, 3029 (1989).CrossRefGoogle Scholar
8.Yang, J., Pickard, S. M., Cady, C., Evans, A. G., and Mehrabian, R., Acta Metall. Mater. 39, 1863 (1991).CrossRefGoogle Scholar
9.Drucker, D. C., in High Strength Materials, edited by Zackay, V. (Wiley, New York, 1964), p. 795.Google Scholar
10.Brown, L. M. and Clarke, D. R., Acta Metall. 23, 821 (1975).CrossRefGoogle Scholar
11.Tanaka, K. and Mori, T., Acta Metall. 18, 931 (1970).CrossRefGoogle Scholar
12.Nardone, V. C. and Prewo, K. M., Scripta Metall. 20, 43 (1986).CrossRefGoogle Scholar
13.Hellawell, A., Prog. Mater. Sci. 15, 1 (1970).CrossRefGoogle Scholar
14.Lu, S. Z. and Hellawell, A., Metall. Trans. 18A, 1721 (1987).CrossRefGoogle Scholar
15.Khan, S. and Elliott, R., J. Mater. Sci. 29, 736 (1994).CrossRefGoogle Scholar
16.Minkoff, I., The Physical Metallurgy of Cast Iron (John Wiley and Sons Ltd., Chischester, UK, 1983), pp. 1–60.Google Scholar
17.Wieser, P. F., Bates, C. E., and Wallace, J. F., Mechanism of Graphite Formation in Iron-Silicon-Carbon Alloys (Malleable Founders Society, Cleveland, OH, 1967), 1st ed., p. 7.Google Scholar
18.Hyman, M. E., McCullough, C., Levi, C. G., and Mehrabian, R., Metall. Trans A 22A, 1647 (1991).CrossRefGoogle Scholar
19.Economy, J., Matkovich, V. I., and Wohrer, L., SAMPE 5, 21 (1968).Google Scholar
20.Wohrer, L., Wosilait, A., and Economy, J., SAMPE 18, 340 (1973).Google Scholar
21.Matkovich, V. I., Economy, J., and Giese, R. F., Jr., Am. Chem. Soc. 86, 2337 (1964).CrossRefGoogle Scholar
22.Matkovich, V. I., Giese, R. F., Jr., and Economy, J., Zeitschrift fur Kristallographie 122, 108 (1965).CrossRefGoogle Scholar
23.Deppisch, C., Liu, G., Shang, J. K., and Economy, J., Mater. Sci. Eng. A225, 153 (1997).CrossRefGoogle Scholar
24.Koczak, M. J. and Prekumar, M. K., Minerals, J., Metals, and Materials Soc. 45, 44 (1993).CrossRefGoogle Scholar
25.Brown, L. M. and Mazdiyasni, K. S., Inorg. Chem. 9, 2783 (1970).CrossRefGoogle Scholar
26.Neronov, V. A., Powder Metall. 10, 58 (1989).Google Scholar
27.Neronov, V. A., Russ. J. Eng. Thermophys. 2, 157 (1992).Google Scholar
28.Samsonov, G. V., Neronov, V. A., and Lamikhov, L. K., J. Less Comm. Metals 67, 291 (1979).CrossRefGoogle Scholar
29.Mondolfo, L. F., in Aluminum Alloy Structure & Properties, edited by Mondolfo, L. F. (Butterworth & Co. Ltd., London, 1976), pp. 228–229.CrossRefGoogle Scholar
30.Wallace, J., in Gray Iron News, edited by Gray Iron Founders Society (Gray Iron Founders Society, Cleveland, OH, 1960), p. 14.Google Scholar
31.Double, D. D. and Hellawell, A., in The Metallurgy of Cast Iron, edited by Lux, B., Minkoff, I., and Mollard, F. (Georgi Pub. Co., St. Saphorin, Switzerland, 1974), pp. 509–528.Google Scholar
32.Abdel-Hamid, A. A., Hamar-Thibault, S., and Hamar, R., J. Cryst. Growth 71, 744 (1985).CrossRefGoogle Scholar
33.Hartman, P., in Crystal Growth: An Introduction, edited by Hartman, P., Bardsley, W., Hurle, D. T. J., and Mullin, J. B. (North-Holland Publishing Co., Amsterdam, The Netherlands, 1973), pp. 367–402.Google Scholar
34.Kuehmann, C. J. and Voorhees, P. W., Metall. Trans. 27A, 937 (1996).CrossRefGoogle Scholar
35.Felton, E. J., J. Am. Chem. Soc. 78, 5977 (1956).CrossRefGoogle Scholar
36.Wyckoff, R. W. G., in Crystal Structures: Vol. 1, 2nd Edition (John Wiley & Sons, New York, London, Sydney, 1965), pp. 362–365.Google Scholar