Slow bainite: an opportunity to determine the carbon content of the bainitic ferrite during growth
- CENIM-CSIC, Madrid, Spain
- ORNL
The amount of carbon in solid solution in bainitic ferrite at the early stage of transformation has been directly determined by atom probe tomography at 200 C, taking advantage of the extremely slow transformation kinetics of a novel nanocrystalline steel. Results demonstrated that the original bainitic ferrite retains much of the carbon content of the parent austenite providing strong evidence that bainite transformation is essentially displacive in nature. In this work, the carbon content of the bainitic ferrite away from any carbon-enriched regions has been determined by atom probe tomography as the bainite transformation progresses at 200 C in this nanocrystalline steel. Results provide experimental evidence for the mechanism controlling bainitic ferrite growth in steels.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1018578
- Resource Relation:
- Conference: Solid-to-Solid Phase Transformation in Inorganic Materials (PTM2010), Avignon, France, 20100606, 20100606
- Country of Publication:
- United States
- Language:
- English
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