Details of pearlite to austenite transformation in steel: Experiments and phase-field modeling

V. Mattos Ferreira*, M. G. Mecozzi, R. H. Petrov, J. Sietsma

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The austenitization of an initial pearlitic microstructure is simulated using the phase field model to achieve insight into White Etching Layer (WEL) formation in pearlitic railway steels. The simulations take into account the resolution of the cementite lamellae within a pearlite colony as well as the presence of pro-eutectoid ferrite. The austenite growth kinetics and morphology obtained via simulations are compared with dilatometry and microscopy observations. The influence of γ/θ and γ/α mobilities on the austenite growth morphology are studied. The simulations reproduce the microstructural features as well as the experimentally observed kinetics behavior of austenite formation, involving the correlation between mobilities and nucleation behavior.

Original languageEnglish
Article number112368
Number of pages12
JournalComputational Materials Science
Volume228
DOIs
Publication statusPublished - 2023

Keywords

  • Pearlite
  • Phase transformation
  • Phase-field modeling

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