Kinetics and microstructural aspects of the coupling between deformation at the austenitic state and ferrite transformation in carbon steels

S. Lacroix, D. Quidort, Y. Bréchet, M. Véron, M. Kandel, T. Lung

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

4 Citations (Scopus)

Abstract

This paper focuses on the description of a simple kinetic model for ferrite formation in strained austenite. Based on our experimental observations in a Fe-0.16C-1.4Mn steel, this model accounts for two main contributions of the deformation in austenite to the kinetics of ferrite transformation: 1) austenite grain shape modification due to deformation and its consequences on the carbon diffusion field, which controls the growth of the ferrite layer and 2) formation of two types of ferrite, one at grain boundaries, and one inside the grains, induced by straining. This model is tuned to describe our experimental kinetics and is applied to continuous cooling and a large range of grades. Some typical results are also presented.

Original languageEnglish
Title of host publicationMicroalloying for New Steel Processes and Applications, p-aS' 05 - Proceedings of the International Conference on Microalloying for New Steel Processes and Applications
PublisherTrans Tech Publications
Pages329-338
Number of pages10
ISBN (Print)0878499814, 9780878499816
DOIs
Publication statusPublished - 2005
Externally publishedYes
EventInternational Conference on Microalloying for New Steel Processes and Applications - San Sebastian Spain, Switzerland
Duration: 1 Jan 2005 → …

Publication series

NameMaterials Science Forum
Volume500-501
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceInternational Conference on Microalloying for New Steel Processes and Applications
CitySwitzerland
Period1/01/05 → …

Keywords

  • Austenite
  • Deformation
  • Ferrite
  • Hot torsion
  • Intragranular ferrite
  • Modeling
  • Nucleation
  • Phase transformation

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