Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-03T02:46:17.575Z Has data issue: false hasContentIssue false
  • English
  • Français

Formation of Quasicrystals In Rapidly Solidified Al Alloys

Published online by Cambridge University Press:  25 February 2011

Robert J. Schaefer  and
Leonid A Bendersky
Robert J. Schaefer
Affiliation:
Metallurgy Division, National Bureau of Standards, Gaithersburg, MD
Leonid A Bendersky
Affiliation:
The Johns Hopkins University, Baltimore, MD: Guest Worker at National Bureau of Standards, Gaithersburg, MD
Get access

Abstract

Electron beam surface melting has been used to study Al-Mn and Al-Mn-Si alloys subjected to a wide range of solidification conditions. Several of the reported equilibrium intermetallic phases are not found even at moderate growth rates. Beyond a composition-dependent critical velocity the equilibrium phases are all replaced by the quasicrystalline icosahedral and decagonal (T) phases. The icosahedral phase is favored over the T phase by higher solidification velocities. The addition of Si to Al-Mn alloys eliminates the T phase, but does not significantly facilitate the formation of the icosahedral phase by electron beam melting because the ternary α and β phases of Al-Mn-Si are able to grow rapidly into the electron beam melts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 58 , 1985 , 217
Copyright
Copyright © Materials Research Society 1986

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

1.Shechtman, D. and Blech, I., Met. Trans. 16A, 1005 (1985).Google Scholar
2.Shechtman, D., Blech, I., Gratias, D., and Cahn, J. W., Phys. Rev. Lett. 53, 1951 (1984).Google Scholar
3.Nicol, A. D. I., Acta Cryst. 6, 285 (1953).Google Scholar
4.Levine, D. and Steinhardt, P., Phys. Rev. Lett. 53, 2477 (1984).Google Scholar
5.Bak, P., Phys. Rev. Lett. 54, 1517 (1985).Google Scholar
6.Elser, V., AT&T Bell Labs, preprint.Google Scholar
7.Duneau, M. and Katz, A., Phys. Rev. Lett. 54, 2688 (1985).Google Scholar
8.Mackay, A. L., Nature 315, 636 (1985).Google Scholar
9.Bendersky, L., Phys. Rev. Lett. 55, 909 (1985).Google Scholar
10.Sastry, G. V. S., Suryanarayana, C., Sande, M. Van and Van, G. Tendeloo, Mat. Res. Bull. 13, 1065 (1978).Google Scholar
11.Shechtman, D., Schaefer, R. B., and Biancaniello, F. S., Met. Trans. 15A, 1987 (1984).Google Scholar
12.Bancel, P. A., Heiney, P. A., Stephens, P. W., Goodman, A. I., and Horn, P. M., Phys. Rev. Lett. 54, 2422 (1985).Google Scholar
13.Ramachandrarao, P. and Sastry, G. V. S., Pramana 24, (1985).Google Scholar
14.Sastry, G. V. S., Ramachandrarao, P., and Anantharaman, T. R., preprint.Google Scholar
15.Bendersky, L. A. and Biancaniello, F. S., unpublished research.Google Scholar
16.Poon, S. J., Drehman, A. J., and Lawless, K. R., Phys. Rev. Lett. 55, 2324 (1985).Google Scholar
17.Zhang, Z., Ye, H. Q., and Kuo, K. H., Phil. Mag. Lett., submitted.Google Scholar
18.Chen, C. H. and Chen, H. S., AT&T Bell Labs, preprint.Google Scholar
19.Elser, V. and Henley, C. L., AT&T Bell Labs, preprint.Google Scholar
20.Perepezko, J. H. and Boettinger, W. J., Mat. Res. Soc. Symp. Proc. 19, 223 (1983).Google Scholar
21.Busill, L. A. and and Lin, P. J., Nature 316, 50 (1985).Google Scholar
22.Hofmann, W., Aluminium Berlin 20, 865 (1938).Google Scholar
23.Bendersky, L., Schaefer, R. J., Biancaniello, F. S., Boettinger, W. J., Kaufman, M. J., and Shechtman, D., Scripta Met. 19, 909 (1985).Google Scholar
24.Sachdev, S. and Nelson, D. R., Phys. Rev. B 32, 4592 (1985).Google Scholar
25.Knapp, J. A. and Follstaedt, D. M., Phys. Rev. Lett. 55, 1591 (1985).Google Scholar
26.Lilienfeld, D. A., Nastasi, M., Johnson, H. H., Ast, D. G., and Mayer, J. W., Phys. Rev. Lett. 55, 1587 (1985).Google Scholar
27.Schaefer, R. J., Bendersky, L. A., Shechtman, D., Boettinger, W. J., and Biancaniello, F. S., Met. Trans. A, submitted.Google Scholar
28.Boettinger, W. J., Shechtman, D., Schaefer, R. J., and Biancaniello, F. S., Met. Trans. 15A, 55 (1984).Google Scholar
29.Kou, S., Hsu, S. C., and Mehrabian, R., Met. Trans. 12B, 33 (1981).Google Scholar
30.Taylor, M. A., Acta Met. 8, 256 (1960).Google Scholar
31.Godecke, T. and Koster, W., Z. Metall. 62, 727 (1971).Google Scholar
32.Yoshida, K., J. Phys. Soc. Japan 32, 431 (1972).Google Scholar
33.Bland, J. A., Acta Cryst. 11, 236 (1958).Google Scholar
34.Bendersky, L. A., this volume.Google Scholar
35.Pearson, W. B., The Crystal Chemistry and Physics of Metals and Alloys, Wiley-Interscience, New York (1972).Google Scholar