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Ordered γ-brass structures coexisting with the decagonal quasicrystal in a Ga46Fe23Cu23Si8 alloy

Published online by Cambridge University Press:  31 January 2011

S. P. Ge  and
K. H. Kuo
S. P. Ge
Affiliation:
Beijing Laboratory of Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, P.O. Box 2724, 100080 Beijing, China
K. H. Kuo
Affiliation:
Beijing Laboratory of Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, P.O. Box 2724, 100080 Beijing, China
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Abstract

In a moderately rapidly solidified Ga46Fe23Cu23Si8 alloy, a face-centered-cubic (fcc) superstructure (a = 1.78 nm) and a hexagonal superstructure (ahex = 2.18 nm and chex = 0.77 nm), based on the same body-centered-cubic (bcc) γ-brass structure (a = 0.89 nm), were found—by means of micro-area electron diffraction—to coexist with the decagonal quasicrystal. The fcc superstructure is probably similar to one of the F-centered-γ-brass structure and has a parallel orientation relationship with the bcc fundamental structure. The hexagonal superstructure has its (001) parallel to the (111) of the bcc γ-brass structure and its chex = abcc[111]/2, and their lattice correspondence relationship has been derived. Electron diffraction evidence is presented to show that these two superstructures are possibly crystalline approximants of the decagonal quasicrystal.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 7 , July 1999 , pp. 2799 - 2805
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1.Ebalard, S. and Spaepen, F., J. Mater. Res. 6, 1641 (1991).CrossRefGoogle Scholar
2.Selke, H., Vogg, U., and Ryder, P.L., Phil. Mag. B 65, 421 (1992).Google Scholar
3.Liu, W. and Köster, W., Mater. Sci. Eng. A 54, 193 (1992).Google Scholar
4.Khare, V., Lalla, N.P., Tiwari, R.S., and Srivastava, O.N., J. Mater. Res. 10, 1905 (1995).Google Scholar
5.Zhang, Z. and Kuo, K.H., Phil. Mag. B 54, L83 (1986).CrossRefGoogle Scholar
6.Dong, C., Kuo, K.H., and Chattopadhyay, K., Mater. Res. Forum 22–24, 555 (1987).Google Scholar
7.Dong, C., Phil. Mag. A 73, 1519 (1996).Google Scholar
8.Dubois, M.J., Phys. Scripta 49, 17 (1993).CrossRefGoogle Scholar
9.Bradley, A.J. and Jones, P., J. Inst. Met. 51, 131 (1933).Google Scholar
10.Daams, J.L.C, Villars, P., and van Vucht, J.H.N., Atlas of Crystal Structure Types for Intermetallic Phases (ASM International, Materials Park, OH, 1997).Google Scholar
11.Westman, S., Crystallographic Studies on Gamma Brass Like Phases in Binary Alloy Systems (Chem. Comm. Univ. Stockholm, No. IV, Stockholm, 1972).Google Scholar
12.Johansson, A. and Westman, S., Acta Chem. Scand. 24, 3471 (1970).Google Scholar
13.Arnberg, L., Jonsson, A., and Westman, S., Acta Chem. Scand. 30, 187 (1976).Google Scholar
14.Brandon, J.K., Brizard, R.Y., Chieh, P.C., McMillan, R.K., and Pearson, W.B., Acta Cryst. B 30, 1412 (1974).Google Scholar
15.Booth, M.H., Brandon, J.K., Brizard, R.Y., Chieh, C., and Pearson, W.B., Acta Cryst. B 33, 30 (1977).Google Scholar
16.Westin, L. and Edshammer, L-E., Acta Chem. Scand. 25, 1480 (1971).Google Scholar
17.Shoemaker, C.B., Phil. Mag. B 67, 869 (1993).Google Scholar
18.Westgren, A. and Phragmén, G., Z. Anorg. Allg. Chem. 175, 80 (1928).Google Scholar
19.Ge, S.P. and Kuo, K.H., Phil. Mag. Lett., 75, 245 (1998).Google Scholar
20.Ge, S.P. and Kuo, K.H., Metall. Mater. Trans., 30A, 697 (1999).Google Scholar
21.Stokhuyzen, R., Brabdon, J.K., Chieh, P.C., and Pearson, W.B., Acta Cryst. B 30, 2910 (1974).Google Scholar
22.Schubert, K., Ananthanraman, T.R., Ata, H.O.K, Meissner, H.G., Pötzschke, M., Rossteutscher, W., and Stolz, E., Z. Naturwiss. 47, 512 (1960).Google Scholar
23.Dong, C., Zhang, Q.H., Wang, D.H., and Wang, Y.M., Phil. Mag. A 79, 501 (1999).Google Scholar
24.Fung, K.K., Yang, C.Y., Zhou, Y.Q., Zhao, J.G., Zhan, W.S., and Shen, B.G., Phys. Rev. Lett. 56, 2060 (1986).Google Scholar