Abstract
This article presents a comparison between transformation kinetics obtained by in-situ X-ray diffraction during continuous heating of a ball bearing steel AISI 52100 to austenitizing temperature and computer simulation. In order to have acquisition times short enough for good time resolution, X-ray diffraction experiments were done with special equipment such as a rotating anode producing intense X-ray radiation and an area detector. Computer simulations of austenitizing were performed with a Johnson–Mehl–Avrami equation. Besides transformation kinetics, the lattice parameters of ferrite and austenite were also studied. Lattice parameters measured by in-situ X-ray diffraction match calculations from models. Good agreement between phase contents obtained by simulation and by X-ray diffraction was obtained.
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Acknowledgment
The authors thank the “Deutsche Forschungsgemeinschaft” for their financial support via projects C2 and A5 in the Collaborative Research Center 570 “Distortion Engineering.”
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Manuscript submitted March 13, 2007.
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Epp, J., Surm, H., Kessler, O. et al. In-Situ X-Ray Investigations and Computer Simulation during Continuous Heating of a Ball Bearing Steel. Metall Mater Trans A 38, 2371–2378 (2007). https://doi.org/10.1007/s11661-007-9314-3
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DOI: https://doi.org/10.1007/s11661-007-9314-3