Hostname: page-component-848d4c4894-4rdrl Total loading time: 0 Render date: 2024-06-27T02:20:21.166Z Has data issue: false hasContentIssue false
  • English
  • Français

TEM study of the early stages of the precipitation process in strip-cast Al3003 alloys

Published online by Cambridge University Press:  31 January 2011

Y.F. Cheng ,
V. Hansen ,
J. Gj⊘nnes  and
L. Reine Wallenberg
Y.F. Cheng
Affiliation:
Department of Physics and Center for Materials Research, University of Oslo, P. O. Box 1048 Blindern, 0316 Oslo 3, Norway
V. Hansen
Affiliation:
Department of Physics and Center for Materials Research, University of Oslo, P. O. Box 1048 Blindern, 0316 Oslo 3, Norway
J. Gj⊘nnes
Affiliation:
Department of Physics and Center for Materials Research, University of Oslo, P. O. Box 1048 Blindern, 0316 Oslo 3, Norway
L. Reine Wallenberg
Affiliation:
National Center for HREM, Inorganic Chemistry 2, Lund University, P. O. Box 124, 221 00 Lund, Sweden
Get access

Abstract

The precipitation behavior, especially the early nucleation stages, of the industrial strip-cast Al3003 alloys was investigated by using transmission electron microscopy (TEM). An icosahedral quasicrystalline phase was found as secondary particles in these strip-cast alloys after heat treatment for a few seconds. Three different nucleation paths are proposed based on the TEM observations. They have the same origin, viz. (Mn, Fe)-containing Mackay icosahedra, and are governed by the composition of alloys, especially the Mn and Si content.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 12 , December 1992 , pp. 3235 - 3241
Copyright
Copyright © Materials Research Society 1992

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

REFERENCES

1Shechtman, D., Blech, I., Gratias, D., and Cahn, J.W., Phys. Rev. Lett. 53, 1951 (1984).Google Scholar
2Yu-Zhang, K., Bigot, J., Chevalier, J-P., Gratias, D., Martin, G., and Portier, R., Philos. Mag. B 58, LI (1988).Google Scholar
3Hansen, V., GjΦnnes, J., and Andersson, B., J. Mater. Sci. Lett. 8, 823 (1989).Google Scholar
4Hansen, V., Skjerpe, P., and Gjønnes, J., Proc. XII. Int. Conf. Electron Microscopy, V4, 956 (1990).Google Scholar
5Hansen, V. and Gjønnes, J., submitted to Philos. Mag. Lett.Google Scholar
6Kim, D. H., Chattopadhyay, K., and Cantor, B., Acta Metall. Mater. 39, 859 (1991).Google Scholar
7Zhang, X. D. and Loretto, M. H., Philos. Mag. B 64, 697 (1991).Google Scholar
8Goel, D., Furrer, P., and Warlimont, H., Aluminum 50 (8), 511 (1974).Google Scholar
9Morris, P. L. and Duggan, B. J., Metal Sci., January, 1 (1978).Google Scholar
10Warlimont, H., Aluminum 53 (3), 171 (1977).Google Scholar
11Furrer, P. and Hausch, G., Metal Sci., March, 155 (1979).Google Scholar
12Chen, Lian and Morris, J. G., Scripta Metall. 18, 1365 (1984).Google Scholar
13Lubensky, T. C., Socolar, J. E. S., Steinhardt, P. J., Bancel, P. A., and Heiney, P. A., Phys. Rev. Lett. 57, 1440 (1986).Google Scholar
14Cooper, M., Acta Cryst. 23, 1106 (1967).Google Scholar
15Cooper, M. and Robinson, K., Acta Cryst. 20, 614 (1966).Google Scholar
16Elser, V. and Henley, C.L., Phys. Rev. Lett. 55, 2883 (1985).Google Scholar
17Guyot, P. and Audier, M., Philos. Mag. B 52, L15 (1985).Google Scholar
18Mackay, A. L., Acta Cryst. 15, 916 (1962).Google Scholar
19Waal, B. W. van de, J. Chem. Phys. 90, 3407 (1989).Google Scholar
20Boyer, L.L. and Broughton, J.Q., Phys. Rev. B 42, 11461 (1990).Google Scholar