Fe-NiAl based alloys: Phase transformations and microstructure due to cobalt addition
Identifieur interne : 000192 ( France/Analysis ); précédent : 000191; suivant : 000193Fe-NiAl based alloys: Phase transformations and microstructure due to cobalt addition
Auteurs : G. Marcon [France] ; S. Lay [France] ; B. Djerdjare [Algérie] ; S. Lebaili [Algérie]Source :
- Journal de physique. IV [ 1155-4339 ] ; 2005.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
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 α phase is partly transformed, when cooled, to a y phase, which at lower temperature is allotropically transformed into a αγ phase. The untransformed α phase, according to Co content, is then transformed by a demixtion process into two α1 and α2 phases. The main cobalt addition effects on the Fe-NiAl based alloy are: the appearance of the y phase, a decrease of demixtion temperature, an increase of Curie temperature and a microstructure refining.
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Pascal:05-0186799Le document en format XML
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<term>Demixtion</term>
<term>High temperature</term>
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<term>Magnetic transitions</term>
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<term>Elément alliage</term>
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<front><div type="abstract" xml:lang="en">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 α phase is partly transformed, when cooled, to a y phase, which at lower temperature is allotropically transformed into a α<sub>γ</sub>
phase. The untransformed α phase, according to Co content, is then transformed by a demixtion process into two α<sub>1</sub>
and α<sub>2</sub>
phases. The main cobalt addition effects on the Fe-NiAl based alloy are: the appearance of the y phase, a decrease of demixtion temperature, an increase of Curie temperature and a microstructure refining.</div>
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