| Issue |
J. Phys. IV France
Volume 123, March 2005
|
|
|---|---|---|
| Page(s) | 117 - 120 | |
| DOI | https://doi.org/10.1051/jp4:2005123019 | |
J. Phys. IV France 123 (2005) 117-120
DOI: 10.1051/jp4:2005123019
Fe-NiAl based alloys: Phase transformations and microstructure due to cobalt addition
G. Marcon1, S. Lay1, B. Djerdjare2 and S. Lebaili21 Laboratoire de Thermodynamique et Physico-Chimie Métallurgiques UMR 5614, INPG, CNRS/UJF, BP. 75, Domaine Universitaire, 38402 Saint-Martin-d'Hères Cedex, France
2 Laboratoire de Science et Génie des Matériaux, Université des Sciences et de la Technologie Houari Boumédienne, BP. 32, El-Alia Bab-Ezzouar, Alger, Algérie
Abstract
Structural characterisation of (Fe, Co)-NiAl alloys
containing 0-50 at. % Co was performed. In alloys containing more than 15
at. % Co a high-temperature bcc 
phase is partly transformed,
when cooled, to a 
phase, which at lower temperature is
allotropically transformed into a
phase. The
untransformed phase, according to Co content, is then transformed
by a demixtion process into two
and
phases.
The main cobalt addition effects on the Fe-NiAl based alloy are: the
appearance of the phase, a decrease of demixtion temperature, an
increase of Curie temperature and a microstructure refining.
© EDP Sciences 2005