Details of pearlite to austenite transformation in steel

Experiments and phase-field modeling

Journal article (2023)

Authors

V. Mattos Ferreira Team Maria Santofimia Navarro - Mechanical, Maritime and Materials Engineering
M.G. Mecozzi Team Erik Offerman - Mechanical, Maritime and Materials Engineering
R.H. Petrov Universiteit Gent, Team Maria Santofimia Navarro - Mechanical, Maritime and Materials Engineering
J. Sietsma Team Joris Dik - Mechanical, Maritime and Materials Engineering
Research Group
Team Maria Santofimia Navarro (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2023 V. Mattos Ferreira, M.G. Mecozzi, R.H. Petrov, J. Sietsma
DOI: https://doi.org/10.1016/j.commatsci.2023.112368
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Published Date

2023

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Maria Santofimia Navarro

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.