Hostname: page-component-7479d7b7d-qlrfm Total loading time: 0 Render date: 2024-07-12T06:42:00.236Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural changes and physical properties of Fe–Ni-based metallic glasses rapidly heated by pulsed electrical currents

Published online by Cambridge University Press:  31 January 2011

L. Zaluski ,
A. Zaluska ,
M. Kopcewicz  and
R. Schulz
L. Zaluski
Affiliation:
Institute of Physics, Polish Academy of Sciences, Warsaw, Poland
A. Zaluska
Affiliation:
Institute of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
M. Kopcewicz
Affiliation:
Institute of Experimental Physics, Warsaw University, Warsaw, Poland
R. Schulz
Affiliation:
Hydro-Quebec Research Institute, Varennes, Quebec, Canada, J3X 1S1
Get access

Abstract

Fe–Ni–Si–B metallic glasses have been annealed and crystallized using short electrical current pulses. Two types of electrical heat treatment have been used. The first one is an isothermal annealing treatment using a very high initial heating rate while the second one is a thermal spike applied on an amorphous sample held at various initial temperatures. The microstructure of the alloys after heat treatment has been characterized by x-ray diffraction, transmission electron microscopy, and Mössbauer spectroscopy. The thermal and magnetic properties of the samples measured by DSC and hysteresis loop tracer have been studied after the various heat treatments and correlated with the microstructure of the alloys. The crystallization at high temperatures produces the gamma phase only, while at low temperatures, a mixture of the gamma and alpha phases (the alpha phase being predominant) is usually observed. The samples initially held at liquid nitrogen temperature and heat treated with a thermal spike remain amorphous and show improved magnetic properties (lower coercive field and higher induction at saturation) without loss of ductility.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 5 , May 1991 , pp. 1028 - 1034
Copyright
Copyright © Materials Research Society 1991

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

1Zaluska, A. and Matyja, H., Int. J. Rapid Solidification 2, 205 (1986).Google Scholar
2Zaluska, A., Zaluski, D., Petryk, R., Zielinski, P. G., and Matyja, H., Proc. 5th Int. Conf. on Rapidly Quenched Metals, edited by Steeb, S. and Warlimont, H. (Elsevier Sci. Pub., 1985), p. 235.CrossRefGoogle Scholar
3Zaluski, L., Zaluska, A., and Krzywinski, J., Acta Physica Pol. A76, 117 (1989).Google Scholar
4LeCaër, G. and Dubois, J. M., J. Phys. E 12, 1083 (1979).Google Scholar
5Romig, A. D. and Goldstein, J. I., Metall. Trans. A 11A, 1151 (1980).CrossRefGoogle Scholar
6Zaluska, A. and Matyja, H., Mater. Sci. Eng. 97, 347 (1988).CrossRefGoogle Scholar
7Gonser, U., Ackermann, M., and Wagner, H. G., J. Magn. Magn. Mat. 31–34, 1605 (1983).CrossRefGoogle Scholar
8Hilzinger, H. R. and Herzer, G., Mater. Sci. Eng. 99, 101 (1988).CrossRefGoogle Scholar
9Haggstrom, L., Granas, L., Wappling, R., and Devanarayanan, S., Phys. Scri. 7, 125 (1973).CrossRefGoogle Scholar
10Stearns, M. B., Phys. Rev. 129, 1136 (1963).CrossRefGoogle Scholar