The austenite/ferrite front migration rate during heating of IF steel

Eric Schmidt, David Soltesz, Scott Roberts, Abbie Bednar, Seetharaman Sridhar

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The austenitization of interstitial free (IF) steel was investigated through real time imaging of evolving surface relief structures through a hot-stage confocal scanning laser microscope. Nucleation was observed at grain edges but site saturation did not occur. As expected the, the migration rate was found to be controlled by an interface reaction and the rate was, within the experimental errors, nearly indistinguishable between IF steels, pure Fe and previously reported rates for pure Fe with activation energies between 174-180 kJ/ mol. There was no apparent effect of solute drag caused by the trace solute elements in the IF steel, but the non-metallic oxide and nitride particles present in the IF steel appeared to impede the front migration and caused it to become jagged in appearance.

Original languageEnglish (US)
Pages (from-to)1500-1509
Number of pages10
JournalISIJ International
Issue number10
StatePublished - 2006
Externally publishedYes


  • Austenitization
  • Confocal scanning laser microscopy (CSLM)
  • Interface migration
  • Interstitial free (IF) steel

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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