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Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys

Identifieur interne : 002D24 ( PascalFrancis/Corpus ); précédent : 002D23; suivant : 002D25

Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys

Auteurs : H. S. Zurob ; C. R. Hutchinson ; Y. Brechet ; H. Seyedrezai ; G. R. Purdy

Source :

RBID : Pascal:09-0300272

Descripteurs français

English descriptors

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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Pour connaître la documentation sur le format Inist Standard.

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A08 01  1  ENG  @1 Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys
A11 01  1    @1 ZUROB (H. S.)
A11 02  1    @1 HUTCHINSON (C. R.)
A11 03  1    @1 BRECHET (Y.)
A11 04  1    @1 SEYEDREZAI (H.)
A11 05  1    @1 PURDY (G. R.)
A14 01      @1 Department of Materials Science and Engineering, McMaster University, 1280 Main Street West @2 Hamilton, Ont., L8S 4L7 @3 CAN @Z 1 aut. @Z 4 aut. @Z 5 aut.
A14 02      @1 Department of Materials Engineering, Monash University @2 Clayton, 3800, Vic. @3 AUS @Z 2 aut.
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C01 01    ENG  @0 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.
C02 01  X    @0 001D11A
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C03 01  X  GER  @0 Kinetik @5 55
C03 01  X  SPA  @0 Cinética @5 55
C03 02  X  FRE  @0 Ferrite @5 56
C03 02  X  ENG  @0 Ferrite @5 56
C03 02  X  GER  @0 Ferrit @5 56
C03 02  X  SPA  @0 Ferrita @5 56
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C03 03  X  SPA  @0 Microestructura @5 57
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C03 04  X  SPA  @0 Segregación @5 58
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Format Inist (serveur)

NO : PASCAL 09-0300272 INIST
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

Links to Exploration step

Pascal:09-0300272

Le document en format XML

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<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*
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<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>
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