Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys
Identifieur interne : 002D24 ( PascalFrancis/Corpus ); précédent : 002D23; suivant : 002D25Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys
Auteurs : H. S. Zurob ; C. R. Hutchinson ; Y. Brechet ; H. Seyedrezai ; G. R. PurdySource :
- Acta materialia [ 1359-6454 ] ; 2009.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Ferrite growth behavior in Fe-C-Mn alloys has been studied using controlled decarburization experiments. The recently reported transition from LENP (local equilibrium-negligible partitioning) kinetics, at lower temperatures, to PE (paraequilibrium) kinetics, at higher temperatures, is shown to behave self-consistently over a range of Mn contents and temperatures and long-lived intermediate states between LENP and PE persist over a well-defined range of temperature and composition. A simple model which quantitatively describes the experimental observations over a range of composition and temperature is proposed. A key feature of this model is the introduction of an alloying element capacity of the moving α/γ interface, X**Mn. The introduction of this quantity is purely guided by the experimental data and, at present, there is no physically based method for calculating it. Once X*Mn is defined, multiple-jump kinetic analysis quantitatively describes the experimental observations over an impressive range of growth behaviors.
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NO : | PASCAL 09-0300272 INIST |
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ET : | Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys |
AU : | ZUROB (H. S.); HUTCHINSON (C. R.); BRECHET (Y.); SEYEDREZAI (H.); PURDY (G. R.) |
AF : | Department of Materials Science and Engineering, McMaster University, 1280 Main Street West/Hamilton, Ont., L8S 4L7/Canada (1 aut., 4 aut., 5 aut.); Department of Materials Engineering, Monash University/Clayton, 3800, Vic./Australie (2 aut.); SIMAP, Institut Nationale Polytechnique de Grenoble/St. Matrin D'Heres, 38000/France (3 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Acta materialia; ISSN 1359-6454; Royaume-Uni; Da. 2009; Vol. 57; No. 9; Pp. 2781-2792; Bibl. 24 ref. |
LA : | Anglais |
EA : | Ferrite growth behavior in Fe-C-Mn alloys has been studied using controlled decarburization experiments. The recently reported transition from LENP (local equilibrium-negligible partitioning) kinetics, at lower temperatures, to PE (paraequilibrium) kinetics, at higher temperatures, is shown to behave self-consistently over a range of Mn contents and temperatures and long-lived intermediate states between LENP and PE persist over a well-defined range of temperature and composition. A simple model which quantitatively describes the experimental observations over a range of composition and temperature is proposed. A key feature of this model is the introduction of an alloying element capacity of the moving α/γ interface, X**Mn. The introduction of this quantity is purely guided by the experimental data and, at present, there is no physically based method for calculating it. Once X*Mn is defined, multiple-jump kinetic analysis quantitatively describes the experimental observations over an impressive range of growth behaviors. |
CC : | 001D11A; 240 |
FD : | Cinétique; Ferrite; Microstructure; Ségrégation |
ED : | Kinetics; Ferrite; Microstructure; Segregation |
GD : | Kinetik; Ferrit; Mikrogefuege; Seigerung |
SD : | Cinética; Ferrita; Microestructura; Segregación |
LO : | INIST-7423.354000187856430210 |
ID : | 09-0300272 |
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Pascal:09-0300272Le document en format XML
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<front><div type="abstract" xml:lang="en">Ferrite growth behavior in Fe-C-Mn alloys has been studied using controlled decarburization experiments. The recently reported transition from LENP (local equilibrium-negligible partitioning) kinetics, at lower temperatures, to PE (paraequilibrium) kinetics, at higher temperatures, is shown to behave self-consistently over a range of Mn contents and temperatures and long-lived intermediate states between LENP and PE persist over a well-defined range of temperature and composition. A simple model which quantitatively describes the experimental observations over a range of composition and temperature is proposed. A key feature of this model is the introduction of an alloying element capacity of the moving α/γ interface, X*<sup>*</sup>
<sub>Mn</sub>
. The introduction of this quantity is purely guided by the experimental data and, at present, there is no physically based method for calculating it. Once X<sup>*</sup>
<sub>Mn</sub>
is defined, multiple-jump kinetic analysis quantitatively describes the experimental observations over an impressive range of growth behaviors.</div>
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<server><NO>PASCAL 09-0300272 INIST</NO>
<ET>Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys</ET>
<AU>ZUROB (H. S.); HUTCHINSON (C. R.); BRECHET (Y.); SEYEDREZAI (H.); PURDY (G. R.)</AU>
<AF>Department of Materials Science and Engineering, McMaster University, 1280 Main Street West/Hamilton, Ont., L8S 4L7/Canada (1 aut., 4 aut., 5 aut.); Department of Materials Engineering, Monash University/Clayton, 3800, Vic./Australie (2 aut.); SIMAP, Institut Nationale Polytechnique de Grenoble/St. Matrin D'Heres, 38000/France (3 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Acta materialia; ISSN 1359-6454; Royaume-Uni; Da. 2009; Vol. 57; No. 9; Pp. 2781-2792; Bibl. 24 ref.</SO>
<LA>Anglais</LA>
<EA>Ferrite growth behavior in Fe-C-Mn alloys has been studied using controlled decarburization experiments. The recently reported transition from LENP (local equilibrium-negligible partitioning) kinetics, at lower temperatures, to PE (paraequilibrium) kinetics, at higher temperatures, is shown to behave self-consistently over a range of Mn contents and temperatures and long-lived intermediate states between LENP and PE persist over a well-defined range of temperature and composition. A simple model which quantitatively describes the experimental observations over a range of composition and temperature is proposed. A key feature of this model is the introduction of an alloying element capacity of the moving α/γ interface, X*<sup>*</sup>
<sub>Mn</sub>
. The introduction of this quantity is purely guided by the experimental data and, at present, there is no physically based method for calculating it. Once X<sup>*</sup>
<sub>Mn</sub>
is defined, multiple-jump kinetic analysis quantitatively describes the experimental observations over an impressive range of growth behaviors.</EA>
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