Hostname: page-component-6bf8c574d5-xtvcr Total loading time: 0 Render date: 2025-02-15T08:46:28.337Z Has data issue: false hasContentIssue false
  • English
  • Français

Phase Transformations in Rapidly Quenched Ni–Mn–Ga Alloys

Published online by Cambridge University Press:  31 January 2011

V. A. Chernenko ,
E. Cesari ,
J. Pons  and
C. Seguí
V. A. Chernenko
Affiliation:
Institute of Magnetism, National Academy of Sciences of Ukraine, Vernadsky Str. 36-B, Kiev, 252680, Ukraine
E. Cesari
Affiliation:
Departament de Física, Universitat de les Illes Balears, Carretera de Valldemossa, km 7.5, E-07071 Palma de Mallorca, Spain
J. Pons
Affiliation:
Departament de Física, Universitat de les Illes Balears, Carretera de Valldemossa, km 7.5, E-07071 Palma de Mallorca, Spain
C. Seguí
Affiliation:
Departament de Física, Universitat de les Illes Balears, Carretera de Valldemossa, km 7.5, E-07071 Palma de Mallorca, Spain
Get access

Abstract

Structural and ferromagnetic transitions in shape memory Ni–Mn–Ga alloys and their martensitic structure and microstructure were found to be strongly influenced by rapid quenching from the liquid state and by subsequent aging. Detailed calorimetric and magnetic measurements, dynamic mechanical analysis, and transmission electron microscopy observations were performed to characterize the transformation behavior of thin ribbons compared to the bulk materials. The rapid quenching caused the decrease of the ferromagnetic, martensitic, and premartensitic transformation temperatures, as well as of the saturation magnetization, while the subsequent annealing brought about an increase of the depressed values. This influence was attributed to quenched-in short-range chemical disorder within sublattices, the ordering being improved by a vacancy migration mechanism upon subsequent annealing.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 7 , July 2000 , pp. 1496 - 1504
Copyright
Copyright © Materials Research Society 2000

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.Chernenko, V.A. and Kokorin, V.V., in Proceedings of the International Conference on Martensitic Transformations, edited by Wayman, C.M. and Perkins, J. (Monterey Institute of Advanced Studies, Carmel, CA, 1992), p. 1205.Google Scholar
2.Chernenko, V.A., Cesari, E., Kokorin, V.V., and Vitenko, I.N., Scr. Metall. Mater. 33, 1239 (1995).Google Scholar
3.Webster, P.J., Ziebeck, K.R.A, Town, S.L., and Peak, M.S., Philos. Mag. B 49, 295 (1984).Google Scholar
4.Chernenko, V.A., Scr. Mater. 40, 523 (1999).CrossRefGoogle Scholar
5.Chernenko, V.A., Amengual, A., Cesari, E., Kokorin, V.V., and Zasimchuk, I.K., J. Phys. IV 5, C2 (1995).Google Scholar
6.Vasil'ev, A.N., Klestov, S.A., Levitin, R.Z., Snegizev, V.V., Kokorin, V.V., and Chernenko, V.A., J. Exp. Theor. Phys. 82, 524 (1996).Google Scholar
7.Chernenko, V.A., L'vov, V.A., and Cesari, E., J. Magn. Magn. Mater. 196–197, 859 (1999).CrossRefGoogle Scholar
8.Mañosa, Ll., González-Comas, A., Obradó, E., Planes, A., Chernenko, V.A., Kokorin, V.V., and Cesari, E., Phys. Rev. B 55, 11068 (1997).CrossRefGoogle Scholar
9.Ullakko, K., Huang, J.K., Kantner, C., O'Handley, R.C., and Kokorin, V.V., Appl. Phys. Lett. 69, 1966 (1996).Google Scholar
10.Tickle, R., James, R.D., Shield, T., Schumacher, P., Wuttig, M., and Kokorin, V.V., IEEE Trans. Magn. 35, 4301 (1999).CrossRefGoogle Scholar
11.Tickle, R. and James, R.D., J. Magn. Magn. Mater. 195, 627 (1999).Google Scholar
12.Chernenko, V.A., Seguí, C., Cesari, E., Pons, J., and Kokorin, V.V., Phys. Rev. B 57, 2659 (1998).CrossRefGoogle Scholar
13.Fritsch, G., Kokorin, V.V., and Kempf, A., J. Phys.: Condens. Matter 6, 4107 (1994).Google Scholar
14.Kokorin, V.V., Chernenko, V.A., Pons, J., Seguí, C., and Cesari, E., Solid State Commun. 101, 7 (1997).CrossRefGoogle Scholar
15.Cesari, E., Chernenko, V.A., Kokorin, V.V., Pons, J., and Seguí, C., Acta Mater. 45, 999 (1997).CrossRefGoogle Scholar
16.Fritsch, G., Kokorin, V.V., Chernenko, V.A., Kempf, A., and Zasimchuk, I.K., Phase Transitions 57, 233 (1996).Google Scholar
17.Kokorin, V.V., Martynov, V.V., and Chernenko, V.A., Scr. Metall. Mater. 26, 175 (1992).Google Scholar
18.Chernenko, V.A., Kokorin, V.V., and Vitenko, I.N., Smart Mater. Struct. 3, 80 (1994).CrossRefGoogle Scholar
19.Stobbs, W.M. and Wood, J.V., Acta Metall. 27, 575 (1979).Google Scholar
20.Eucken, S. and Hornbogen, E., in Rapidly Quenched Metals, Proceedings of the 5th International Conference, Würzburg, Germany, 1994 (Elsevier, Amsterdam, The Netherlands, 1995), p. 1429.Google Scholar
21.Chernenko, V.A., Hamarnik, M.Y., and Kozlova, E., Mater. Sci. Forum 79–82, 557 (1991).Google Scholar
22.Eucken, S. and Hornbogen, E., in Proceedings of the International Conference on Martensitic Transformations, edited by The Japan Institute of Metals (Japan Institute of Metals, Sendai, Japan, 1986), p. 780.Google Scholar
23.González-Comas, A., Obradó, E., Mañosa, Ll., Planes, A., Chernenko, V.A., Hattink, B.J., and Labarta, A., Phys. Rev. B 60, 7085 (1999).Google Scholar
24.Kong, Y., Jiang, B., Hsu, T.Y., Wang, B., and Wang, T., in Shape-Memory Materials and Phenomena—Fundamental Aspects and Applications, edited by Liu, C.T., Kunsman, H., Otsuka, K., and Wuttig, M. (Mater. Res. Soc. Symp. Proc. 246, Pittsburgh, PA, 1992), p. 25.Google Scholar
25.Wei, Z.G. and Sandström, R., Scr. Mater. 37, 1727 (1997)CrossRefGoogle Scholar
26.Liu, C.T., Sparks, C.J., Horton, J.A., George, E.P., Carmichael, C.A., Kao, M.Y., and Kunsman, H., in Shape-Memory Materials and Phenomena—Fundamental Aspects and Application, edited by Liu, C.T., Kunsmann, H., Otsuka, K., and Wuttig, M. (Mater. Res. Soc. Symp. Proc. 246, Pittsburgh, PA, 1992), p. 169.Google Scholar
27.Soltys, J., Acta Phys. Pol. A 47, 521 (1975)Google Scholar