Kinetics study of the spinodal decomposition in the Fe–30.8Cr–12.2Co alloy by Mössbauer spectrometry
Identifieur interne : 000D57 ( Main/Exploration ); précédent : 000D56; suivant : 000D58Kinetics 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.
Descripteurs français
- Pascal (Inist)
- 8130H, Alliage Fe57Cr31Co12, Alliage base fer, Alliage ternaire, Champ magnétique hyperfin, Chrome alliage, Cinétique, Co Cr Fe, Cobalt alliage, Décomposition spinodale, Dépendance temps, Dépendance température, Energie activation, Etude expérimentale, Spectrométrie Mössbauer, Temps incubation, Transformation phase, Vieillissement.
English descriptors
- KwdEn :
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 kJmol−1.
Url:
DOI: 10.1016/S0925-8388(98)00649-5
Affiliations:
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Greneche</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Physique de l'Etat Condensé UPRESA-CNRS 6087, Université du Maine Faculté des Sciences, 72085 LE MANS Cédex 9</wicri:regionArea><placeName><region type="region" nuts="2">Pays de la Loire</region><settlement type="city">LE MANS Cédex 9</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Alloys and Compounds</title><title level="j" type="abbrev">JALCOM</title><idno type="ISSN">0925-8388</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1999">1999</date><biblScope unit="volume">282</biblScope><biblScope unit="issue">1–2</biblScope><biblScope unit="page" from="206">206</biblScope><biblScope unit="page" to="212">212</biblScope></imprint><idno type="ISSN">0925-8388</idno></series><idno type="istex">1C24365056F15AB244A24768E676827B9E3B910F</idno><idno type="DOI">10.1016/S0925-8388(98)00649-5</idno><idno type="PII">S0925-8388(98)00649-5</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0925-8388</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activation energy</term><term>Aging</term><term>Chromium alloys</term><term>Cobalt alloys</term><term>Experimental study</term><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><term>Time dependence</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>8130H</term><term>Alliage Fe57Cr31Co12</term><term>Alliage base fer</term><term>Alliage ternaire</term><term>Champ magnétique hyperfin</term><term>Chrome alliage</term><term>Cinétique</term><term>Co Cr Fe</term><term>Cobalt alliage</term><term>Décomposition spinodale</term><term>Dépendance temps</term><term>Dépendance température</term><term>Energie activation</term><term>Etude expérimentale</term><term>Spectrométrie Mössbauer</term><term>Temps incubation</term><term>Transformation phase</term><term>Vieillissement</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><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 kJmol−1.</div></front></TEI><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Pays de la Loire</li></region><settlement><li>LE MANS Cédex 9</li></settlement></list><tree><country name="Algérie"><noRegion><name sortKey="Alleg, S" sort="Alleg, S" uniqKey="Alleg S" first="S." last="Alleg">S. Alleg</name></noRegion><name sortKey="Bouzabata, B" sort="Bouzabata, B" uniqKey="Bouzabata B" first="B." last="Bouzabata">B. Bouzabata</name></country><country name="France"><region name="Pays de la Loire"><name sortKey="Greneche, J M" sort="Greneche, J M" uniqKey="Greneche J" first="J. M." last="Greneche">J. M. Greneche</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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