CobaltMaghrebV1, Main, Merge, bibRecord, 000E48

Kinetics study of the spinodal decomposition in the Fe-30.8Cr-12.2Co alloy by Mössbauer spectrometry

Identifieur interne : 000E48 ( Main/Merge ); précédent : 000E47; suivant : 000E49

Kinetics study of the spinodal decomposition in the Fe-30.8Cr-12.2Co alloy by Mössbauer spectrometry

Auteurs : S. Alleg [Algérie] ; B. Bouzabata [Algérie] ; J. M. Greneche [France]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 1999.

RBID : Pascal:99-0061270

Descripteurs français

Pascal (Inist)
- Transformation phase, Décomposition spinodale, Vieillissement, Spectrométrie Mössbauer, Champ magnétique hyperfin, Dépendance température, Cinétique, Dépendance temps, Energie activation, Alliage base fer, Chrome alliage, Cobalt alliage, Etude expérimentale, Alliage ternaire, 8130H, Alliage Fe57Cr31Co12, Co Cr Fe, Temps incubation.

English descriptors

KwdEn :
- Activation energy, Aging, Chromium alloys, Cobalt alloys, Experimental study, Hyperfine magnetic field, Incubation time, Iron base alloys, Kinetics, Moessbauer spectroscopy, Phase transformations, Spinodal decomposition, Temperature dependence, Ternary alloys, Time dependence.

Abstract

The phase transformation in the Fe-30.8Cr-12.2Co alloy has been studied by Mössbauer spectrometry as a function of the aging time at the temperatures 520, 560 and 600°C, It is found that the transformation occurs without any incubation time, consistent with a spinodal decomposition and that the average hyperfine field increases indicating changes of iron environments. The decomposition rate is influenced by the aging temperature and increases at higher temperatures. The kinetics of transformation can be described by an Avrami parameter smaller than 0.2 and a value of the activation energy close to 17 kJ mol^- ¹.

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Pascal:99-0061270

Le document en format XML

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<term>Hyperfine magnetic field</term>
<term>Incubation time</term>
<term>Iron base alloys</term>
<term>Kinetics</term>
<term>Moessbauer spectroscopy</term>
<term>Phase transformations</term>
<term>Spinodal decomposition</term>
<term>Temperature dependence</term>
<term>Ternary alloys</term>
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<term>Champ magnétique hyperfin</term>
<term>Dépendance température</term>
<term>Cinétique</term>
<term>Dépendance temps</term>
<term>Energie activation</term>
<term>Alliage base fer</term>
<term>Chrome alliage</term>
<term>Cobalt alliage</term>
<term>Etude expérimentale</term>
<term>Alliage ternaire</term>
<term>8130H</term>
<term>Alliage Fe57Cr31Co12</term>
<term>Co Cr Fe</term>
<term>Temps incubation</term>
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<front><div type="abstract" xml:lang="en">The phase transformation in the Fe-30.8Cr-12.2Co alloy has been studied by Mössbauer spectrometry as a function of the aging time at the temperatures 520, 560 and 600°C, It is found that the transformation occurs without any incubation time, consistent with a spinodal decomposition and that the average hyperfine field increases indicating changes of iron environments. The decomposition rate is influenced by the aging temperature and increases at higher temperatures. The kinetics of transformation can be described by an Avrami parameter smaller than 0.2 and a value of the activation energy close to 17 kJ mol<sup>-</sup>
 <sup>1</sup>
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Kinetics study of the spinodal decomposition in the Fe-30.8Cr-12.2Co alloy by Mössbauer spectrometry

Kinetics study of the spinodal decomposition in the Fe-30.8Cr-12.2Co alloy by Mössbauer spectrometry

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri