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Melting Point Measurements for Quasicrystalline Phases

Published online by Cambridge University Press:  28 February 2011

J. A. Knapp  and
D. M. Follstaedt
J. A. Knapp
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185
D. M. Follstaedt
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185
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Abstract

Melting transitions of metastable quasicrystalline phases of Al-Mn have been observed using rapid electron-beam heating of fine-grained icosahedral surface layers. The congruent melting-point for icosahedral Al80 Mn20 was directly measured to be 910±20°C. Heating to higher temperatures shows another transition which is inferred to correspond to the liquidus of the decagonal phase at 965±20°C for 20 at.% Mn. The microstructure and formation kinetics of the decagonal phase are discussed, and its electron diffraction is described.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 74: Symposium A – Beam-Solid Interactions and Transient Processes , 1986 , 167
Copyright
Copyright © Materials Research Society 1987

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References

1. Shechtman, D., Blech, I., Gratias, D. and Cahn, J. W., Phys. Rev. Lett. 53, 1951 (1984).CrossRefGoogle Scholar
2. Bendersky, L., Phys. Rev. Lett. 25, 1461 (1985).Google Scholar
3. Stephens, P. W. and Goldman, A. I., Phys. Rev. Lett. 56, 1168 (1986); Phys. Rev. Lett. 57, 2331 (1986).Google Scholar
4. Levine, D. and Steinhardt, P. J., Phys. Rev. Lett. 53, 2477 (1984).Google Scholar
5. Knapp, J. A. and Follstaedt, D. M., Mat. Res. Soc. Symp. Proc. 51, 415 (1986).Google Scholar
6. Knapp, J. A. and Follstaedt, D. M., Phys. Rev. Lett. 55, 1591 (1985).Google Scholar
7. Follstaedt, D. M. and Knapp, J. A., Mat. Res. Soc. Symp. Proc. 58, 233 (1986).Google Scholar
8. Knapp, J. A. and Follstaedt, D. M., Nucl. Inst. Meth., in press.Google Scholar
9. Knapp, J. A. and Follstaedt, D. M., submitted to Phys. Rev. Lett.Google Scholar
10. Knapp, J. A. and Picraux, S. T., J. Appl. Phys. 53, 1492 (1982); J. A. Knapp, J. Appl. Phys. 58, 2584 (1985).CrossRefGoogle Scholar
11. Schaefer, R. J., Bendersky, L. A., Shechtman, D., Boettinger, W. J. and Biancaniello, F. S., to be published.Google Scholar
12. Gronsky, R., Krishnan, K. H. and Tanner, L., in Proceedings of the 43d Annual Meeting of the Electron Microscopy Society of America, ed. Bailey, G. W. (San Francisco Press, San Francisco, 1985), p. 34.Google Scholar
13. Murray, J. L., McAlister, A. J., Schaefer, R. J., Bendersky, L. A., Biancaniello, F. and Moffat, D. L., to be published in Met. Trans.Google Scholar
14. We have previously measured a nucleation time < 20 ns for the icosahedral phase, but at lower temperature (660–760°C) and increased undercooling; see ref. 5.Google Scholar
15. Schaefer, R. J. and Bendersky, L. A., Mat. Res. Soc. Symp. Proc. 58, 217 (1986).CrossRefGoogle Scholar
16. Dubois, J.-M., Janot, C., Pannetier, J. and Pianelli, A., Phys. Lett. A 117, 421 (1986).Google Scholar
17. Bancel, P. A., Heiney, P. A., Stephens, P. W., Goldman, A. I., and Horn, P. M., Phys. Rev. Lett. 54, 2422 (1985).Google Scholar
18. Bendersky, L., Phys. Rev. Lett. 55, 1461 (1986).Google Scholar
19. Bendersky, L., Schaefer, R. J., Biancaniello, F. S., Boettinger, W. J., Kaufman, M. J. and Shechtman, D., Scripta Met. 19, 909 (1986).Google Scholar
20. Shechtman, D., Schaefer, R. J. and Biancaniello, F. S., Met. Trans. A 15A, 1987 (1984).Google Scholar