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Metallurgical and Materials Transactions A

, Volume 44, Issue 8, pp 3472–3483 | Cite as

Quantifying the Solute Drag Effect on Ferrite Growth in Fe-C-X Alloys Using Controlled Decarburization Experiments

  • C. Qiu
  • H. S. Zurob
  • D. Panahi
  • Brechet Y. J. M. 
  • G. R. Purdy
  • C. R. HutchinsonEmail author
Symposium: Atomistic Effects in Migrating Interphase Interfaces: Recent Progress and Future Study

Abstract

The kinetics of ferrite growth in the Fe-C-Co and Fe-C-Si systems has been quantified using controlled decarburization experiments. The Fe-C-Co system is a particularly interesting system since a large range of Co contents can be considered providing a suitable data set for examination of the composition dependence of the solute drag effect. Six Fe-C-Co alloys containing Co from 0.5 to 20 pct have been considered. Three Fe-C-Si alloys have also been considered and each has been transformed at three temperatures proving a suitable data set for examining the temperature dependence of the solute drag effect. This data set, along with ferrite growth data from decarburization experiments on an Fe-C-2Cr alloy has been used to test the ferrite growth model proposed in the companion article by Zurob et al. It is shown that this model for ferrite growth, that includes diffusional dissipation due to interaction between the solute and the migrating boundary, quantitatively captures both the temperature and composition dependence of the deviation of experimental ferrite growth kinetics from the PE and/or LENP models.

Keywords

Ferrite Austenite Decarburization Boundary Velocity Chemical Potential Gradient 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

CQ acknowledges the award of a Monash Graduate Scholarship (MGS) and an International Postgraduate Research Scholarship (IPRS). HSZ, DP and GP gratefully acknowledge the financial support of the Natural Science and Engineering Research Council of Canada. CRH gratefully acknowledges the award of a Future Fellowship from the Australian Research Council. The authors also wish to acknowledge many stimulating discussions with the ALEMI community.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2012

Authors and Affiliations

  • C. Qiu
    • 1
  • H. S. Zurob
    • 2
  • D. Panahi
    • 2
  • Brechet Y. J. M. 
    • 3
  • G. R. Purdy
    • 2
  • C. R. Hutchinson
    • 1
    Email author
  1. 1.Department of Materials EngineeringMonash UniversityClaytonAustralia
  2. 2.Department of Materials Science and EngineeringMcMaster UniversityHamiltonCanada
  3. 3.SIMAP, Institut National Polytechnique de GrenobleSt Martin D’HèresFrance

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