| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Use of Large Scale Facilities to Understand the Physical Metallurgy of Fe-based Alloys
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| Presentation Title |
Real-time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-rolled Steel Using High Energy X-ray Diffraction (HEXRD) |
| Author(s) |
Marc Moreno, Guillaume Geandier, Julien Teixeira, Jean-Christophe Hell, Frédéric Bonnet, Sebastien Y.P. Allain |
| On-Site Speaker (Planned) |
Sebastien Y.P. Allain |
| Abstract Scope |
We propose a new method based on High Energy X-Ray Diffraction (HEXRD) on synchrotron beamline to follow in situ during a single experiment the recovery, the recrystallization and the austenite transformation when annealing a cold-rolled ferritic steel.
Phase transformations and recovery kinetics are determined on the basis of a conventional Rietveld refinement procedure coupled with a Williamson-Hall approach. The study of the recrystallization has required on the contrary the development of a new procedure inspired by the 3D X-ray diffraction tomography. It is based on a systematic detection of individual diffraction spots related to newly recrystallized grains appearing on Debye-Scherrer rings.
The method has been applied to the case of ferrite/pearlite steels annealed to manufacture Dual-Phase steels. Powder diffraction experiments in transmission (100 keV) have been conducted at DESY–P07. Diffraction patterns have been acquired all along the annealing treatment. Deduced kinetics is validated by more conventional ex situ methods. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |