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Approximants to the icosahedral and decagonal phases in the Al–Cu–Cr system

Published online by Cambridge University Press:  31 January 2011

S. Ebalard  and
F. Spaepen
S. Ebalard
Affiliation:
Division of Applied Sciences, Harvard University, Cambridge, Massachusetts 02138
F. Spaepen
Affiliation:
Division of Applied Sciences, Harvard University, Cambridge, Massachusetts 02138
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Abstract

A 1/1-type approximant to the AlCuCr icosahedral phase and approximants to a decagonal phase have been found in an as-cast Al65Cu20Cr15 ingot. Selected area electron diffraction indicates that the 1/1-type approximant consists of Mackay icosahedra arranged on a bcc lattice, similar to the α-AlMnSi cubic phase. Ordering of the glue atoms produces a base-centered orthorhombic superstructure, making the overall structure monoclinic P2/m, with lattice parameters a = 12.6 Å, c = 17.92 Å, and α = 90°.

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Articles
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Journal of Materials Research , Volume 6 , Issue 8 , August 1991 , pp. 1641 - 1649
Copyright
Copyright © Materials Research Society 1991

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References

1.Katz, A. and Duneau, M., J. Physique 47, 181 (1986).CrossRefGoogle Scholar
2.Elser, V., Phys. Rev. B 32, 4892 (1985).CrossRefGoogle Scholar
3.Elser, V. and Henley, C.L., Phys. Rev. Lett. 55, 2883 (1985).CrossRefGoogle Scholar
4.Henley, C. L. and Elser, V., Philos. Mag. B 53, L59–L66 (1986).Google Scholar
5.Guyot, P. and Audier, M., Philos. Mag. B 52, L15–L19 (1985).CrossRefGoogle Scholar
6.Cooper, M. and Robinson, K., Acta Cryst. 20, 614 (1966).CrossRefGoogle Scholar
7.Bergman, G., Waugh, J. L. T., and Pauling, L., Acta Cryst. 10, 254 (1957).CrossRefGoogle Scholar
8.Shechtman, D., Blech, I., Gratias, D., and Cahn, J. W., Phys. Rev. Lett. 53, 1951 (1984).Google Scholar
9.Sastry, G. V. S. and Ramachandrarao, P., J. Mater. Res. 1, 247 (1986).CrossRefGoogle Scholar
10.Tsai, A. P., Inoue, A., and Masumoto, T., J. Mater. Sci. Lett. 7, 322 (1988).CrossRefGoogle Scholar
11.Ebalard, S. and Spaepen, F., J. Mater. Res. 5, 62 (1990).CrossRefGoogle Scholar
12.Ebalard, S., Ph. D. Thesis, Harvard University (1989).Google Scholar
13.Fowler, H. A., Mozer, B., and Sims, J., Phys. Rev. B 37, 3906 (1988).CrossRefGoogle Scholar
14.He, L. X., Wu, Y. K., Meng, X. M., and Kuo, K. H., Philos. Mag. Lett. 61, 15 (1990).CrossRefGoogle Scholar
15.He, L. X., Wu, Y. K., and Kuo, K. H., J. Mater. Sci. Lett. 7, 1284 (1988).CrossRefGoogle Scholar