Hostname: page-component-7bb8b95d7b-dvmhs Total loading time: 0 Render date: 2024-09-15T00:27:38.488Z Has data issue: false hasContentIssue false
  • English
  • Français

Nanograin-Boundary-Controlled Reordering in Mechanically Disordered Nanocrystalline L12-Type Ni3 Al+Fe

Published online by Cambridge University Press:  25 February 2011

A.R. Yavari
A.R. Yavari*
Affiliation:
CNRS-URA 29-LTPCM, Institut National Polytechnique de Grenoble, BP 75, DomaineUniversitaire, 38402 St Martin d'Hères, France
Get access

Abstract

Using mechanical attrition (milling) which also transforms the material into nanocrystalline form, various L12 or γ-type Ni3 A1-Fe alloys have been prepared in metastable-γ form and their magnetisations M(γ) and M(γ) and Curie temperatures Tc(γ) and Tc(γ) measured.

Using magnetic properties we determine isothermal ordering kinetics in the nanocrystalline γstate and find that the ordering reaction cannot propagate across the nanograin boundaries. Each grain must obtain its own γ nucleus thus resulting in a Johnnson-Mehl-Avrami exponent n =1.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 286: Symposium J – Nanophase and Nanocomposite Materials , 1992 , 233
Copyright
Copyright © Materials Research Society 1993

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 Ordering and Disordering in Alloys, edited by Yavari, A.R.,(Elsevier Applied Science 1992)Google Scholar
2. Corey, C.L. and Potterj, D.I.. Appl. Phys. 38, 3894 (1967)Google Scholar
3. Jang, J.S.C. and Koch, C.C., J. Mater. Res. 5, 498 (1990)Google Scholar
4. Gialanella, S., Cahn, R.W., Malagelada, J., Surinach, S., Baro, M.D. and Yavari, A.R., (Annual TMS Meeting, San Diego. March 1992) in press.Google Scholar
5. BenAmeur, T. and Yavari, A.R., J. Mater. Res, November issue,1992.Google Scholar
6. Masahashi, N., Kanbzoe, H., Takasugi, T. and Izumi, O., Z. Metallkde, 78, 788 (1987).Google Scholar
7. Kozubski, R., Soltys, J. and Cadeville, M.C., J. Phys C. 2, 3451 (1990).Google Scholar
8. Cahn, R.W., Siemers, P.A., Geiger, J.E. and Bardhan, P., Acta Metall Mater.,35,2737(1987).Google Scholar
9. Yavari, A.R. and Bochu, B., Phio. Mag. A59, 697 (1989).Google Scholar
10 Efthemiadis, K.G., Antonopoulos, J.G. and Tsoukalas, I.A., Solid State Comm. 70, 903 (1989).Google Scholar
11 Yavari, A.R., Baro, M.D., Fillion, G., Surinach, S., Gialanella, S., Clavaguera, M.T., Desré, P. and Cahn, R.W., Mater Res.Soc.Proc. 213, 859 (1990).Google Scholar
12. Yavari, A.R., Crespo, P., Pulido, E., Hernando, A., Fillion, G., Lethuilier, P., Baro, M.D. and Surinach, S., in Ordering and Disordering in Alloys, edited by Yavari, A.R.,(Elsevier Applied Science, 1992) pp. 12–22.Google Scholar
13. Yavari, A.R., Acta Metall. Mater., in press.Google Scholar
14. Baro, M.D., Malagelada, J., Surinach, S., Clavaguera, N. and Clavaguera, M.T., in Ordering and Disordering in Alloys edited by Yavari, A.R.,(Elsevier Applied Science,1992) pp.55–66.Google Scholar
15 Okamoto, J.K., TMS Student Paper Competition (1991).Google Scholar
16 Nichols, J.R. and Rawlings, R.D., Acta Metall. 25, 187 (1977).Google Scholar
17. Thalence, J.L., Tissier, B., Tournier, R. and Vergne, R., Solid State Comm. 8, 201 (1970).Google Scholar
18 Christian, J. W The Theory of Transformation in Metals and Alloy (Second Edition, Pergamon Press, Oxford 1975).Google Scholar
19. Mitsui, K., Mishima, Y. and Suzuki, T., Philo. Mag. A59, 123 (1989).Google Scholar
20. Horton, J.A. and Miller, M.K., Acta Metall. 35,133 (1987).Google Scholar
21. Foiles, S.M. Mater.Res.Proc. 81,51 (1987).Google Scholar
22. Sieloff, D.D., Brenner, S.S. and Burke, M.G., Mater.Res.Soc.Proc. 81,87 (1987).Google Scholar
23. Baker, I., Schulson, E.M. and Michael, J.R.,Philo.Mag. B57,379 (1988).Google Scholar
24. Mackenzie, R.A.D. and Sass, S.L., Scripta Metall. 22,1807 (1988).Google Scholar
25. Turnbull, D., J. Chem. Phys. 20, 41 (1952).Google Scholar
26 Fecht, H.J., Hellstern, E., Fu, Z. and Johnson, W.L., in Advances in Powder Metallurgy, (Metal Powder Industries Federation, Princeton 1989) vol 1-3, pp.11 1-122.Google Scholar
27. Song, M.Y., Ivanov, E., Darriet, B., Pezat, M. and Hagenmuller, P.,J.Less Comm.Metals 131, 71(1987).Google Scholar