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Evidence of a Correlation Between the Transition Temperature for Ordering and the Activation Energy for Ordering Kinetics in Ni75Al25-xFex Superalloys

Published online by Cambridge University Press:  26 February 2011

R. Kozubski ,
J. Soltys ,
M.C. Cadeville  and
V. Pierron-Bohhes
R. Kozubski
Affiliation:
institute of Physics, Jagellonian University, Reymonta 4, 30–059 Krakow, Poland
J. Soltys
Affiliation:
institute of Physics, Jagellonian University, Reymonta 4, 30–059 Krakow, Poland
M.C. Cadeville
Affiliation:
Groupe d'Etude des Materiaux Ketalliques, I.P.C.M.S., 4, rue Blaise Pascal, 67070 Strasbourg Cedex, France
V. Pierron-Bohhes
Affiliation:
Groupe d'Etude des Materiaux Ketalliques, I.P.C.M.S., 4, rue Blaise Pascal, 67070 Strasbourg Cedex, France
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Abstract

Kinetics of long-range ordering was studied in the alloys Ni75Al25-xFex by means of in situ resistometry. The alloys under consideration exhibit a dramatic decrease of the "order-disorder" transition temperature Ttr with increasing X. After the existing theoretical models, the activation energy of long-range ordering should depend on one hand on the energy of ordering - related to Ttr -, and on the other hand, on the current value of the LRO degree. The performed measurements yield an experimental evidence of the above relationships. In addition, a considerable effect of magnetic order on LRO kinetics has also been registered. The results are qualitatively discussed in terms of the model of LRO kinetics in L12 structure proposed by Schoijet and Girifalco.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 205: Symposium F – Kinetics of Phase Transformations , 1990 , 153
Copyright
Copyright © Materials Research Society 1992

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References

1. Schoijet, M. and Girifalco, L.A., J. Phys. Chem. Solids a) 29, 497 (1968); b) 29, 911 (1968).CrossRefGoogle Scholar
2. Fontaine, D. de, J. Phys. Chem. Solids 34, 1285 (1973).CrossRefGoogle Scholar
3. Gschwend, K., Sato, H. and Kikuchi, R., J. Chem. Phys. 69, 5006 (1978).CrossRefGoogle Scholar
4. Bakker, H. in Diffusion in Crystalline Solids, edited by Murch, G.E. and Nowick, A.S. (Academic Press, Inc., Orlando, 1984), pp.213–234.Google Scholar
5. Masahashi, N., Kawazoe, M., Takasugi, T. and Izumi, O., Z. Metallk. 78, 788 (1987).Google Scholar
6. Efthimiadis, K.G., Antonopoulos, J.G. and Tsoukalas, I.A., Solid State Commun. 70, 903 (1989).CrossRefGoogle Scholar
7. Kozubski, R., Soltys, J. and Cadeville, M.C., J.Phys.: Condens. Matter 2, 3451 (1990).Google Scholar
8. Kozubski, R. and Cadeville, M.C., J.Phys.F: Met.Phys. 18, 2569 (1988).CrossRefGoogle Scholar
9. Shindo, D., Kikuchi, M., Hirabayashi, M., Hanada, S. and Izumi, O., Trans. Japan Inst. Metals 29, 956 (1988).CrossRefGoogle Scholar