Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD)
The annealing process of cold-rolled ferrite/pearlite steel involves numerous metallurgical mechanisms as recovery/recrystallization of deformed phases, ripening of carbide microstructure, and austenite transformation in the intercritical domain. The interactions between these mechanisms govern the...
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MDPI AG
2018-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/1/8 |
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| author | Marc Moreno Julien Teixeira Guillaume Geandier Jean-Christophe Hell Frédéric Bonnet Mathieu Salib Sébastien Y.P. Allain |
| author_facet | Marc Moreno Julien Teixeira Guillaume Geandier Jean-Christophe Hell Frédéric Bonnet Mathieu Salib Sébastien Y.P. Allain |
| author_sort | Marc Moreno |
| collection | DOAJ |
| description | The annealing process of cold-rolled ferrite/pearlite steel involves numerous metallurgical mechanisms as recovery/recrystallization of deformed phases, ripening of carbide microstructure, and austenite transformation in the intercritical domain. The interactions between these mechanisms govern the morphogenesis of the transformed austenite microstructure and, thus, the final properties of the steel. This paper demonstrates that high energy X-ray diffraction (HEXRD) on synchrotron beamline offers the unique possibility to follow concomitantly these mechanisms in situ during a single experiment. A cold-rolled ferrite-pearlite steel dedicated to the industrial production of Dual-Phase steel serves as case-study. Synchrotron experiments have been conducted in transmission at 100 keV with a 2D detector. Diffraction patterns acquired all along an annealing treatment are first analyzed after circular integration. A Rietveld refinement procedure coupled with a Williamson-Hall approach is used to determine phase transformation and recovery kinetics. In this paper, a new method inspired by the 3D X-ray diffraction tomography is proposed to follow recrystallization kinetics at the same time. It is based on a systematic detection of individual diffraction spots related to newly recrystallized grains appearing on Debye-Scherrer rings. The deduced recrystallization kinetics is compared and validated by more conventional ex situ methods. |
| first_indexed | 2024-04-12T17:36:12Z |
| format | Article |
| id | doaj.art-cfa59c71509e4241997dd81b667a6d22 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-04-12T17:36:12Z |
| publishDate | 2018-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-cfa59c71509e4241997dd81b667a6d222022-12-22T03:22:58ZengMDPI AGMetals2075-47012018-12-0191810.3390/met9010008met9010008Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD)Marc Moreno0Julien Teixeira1Guillaume Geandier2Jean-Christophe Hell3Frédéric Bonnet4Mathieu Salib5Sébastien Y.P. Allain6Institut Jean Lamour, UMR CNRS-UL 7198, Campus ARTEM, 54000 Nancy, FranceInstitut Jean Lamour, UMR CNRS-UL 7198, Campus ARTEM, 54000 Nancy, FranceInstitut Jean Lamour, UMR CNRS-UL 7198, Campus ARTEM, 54000 Nancy, FranceProduct Research Center, ArcelorMittal Maizières Research, Voie Romaine, 57283 Maizières les Metz, FranceProduct Research Center, ArcelorMittal Maizières Research, Voie Romaine, 57283 Maizières les Metz, FranceProduct Research Center, ArcelorMittal Maizières Research, Voie Romaine, 57283 Maizières les Metz, FranceInstitut Jean Lamour, UMR CNRS-UL 7198, Campus ARTEM, 54000 Nancy, FranceThe annealing process of cold-rolled ferrite/pearlite steel involves numerous metallurgical mechanisms as recovery/recrystallization of deformed phases, ripening of carbide microstructure, and austenite transformation in the intercritical domain. The interactions between these mechanisms govern the morphogenesis of the transformed austenite microstructure and, thus, the final properties of the steel. This paper demonstrates that high energy X-ray diffraction (HEXRD) on synchrotron beamline offers the unique possibility to follow concomitantly these mechanisms in situ during a single experiment. A cold-rolled ferrite-pearlite steel dedicated to the industrial production of Dual-Phase steel serves as case-study. Synchrotron experiments have been conducted in transmission at 100 keV with a 2D detector. Diffraction patterns acquired all along an annealing treatment are first analyzed after circular integration. A Rietveld refinement procedure coupled with a Williamson-Hall approach is used to determine phase transformation and recovery kinetics. In this paper, a new method inspired by the 3D X-ray diffraction tomography is proposed to follow recrystallization kinetics at the same time. It is based on a systematic detection of individual diffraction spots related to newly recrystallized grains appearing on Debye-Scherrer rings. The deduced recrystallization kinetics is compared and validated by more conventional ex situ methods.https://www.mdpi.com/2075-4701/9/1/8X-ray diffractionrecrystallizationrecoveryrhase transformationsynchrotron |
| spellingShingle | Marc Moreno Julien Teixeira Guillaume Geandier Jean-Christophe Hell Frédéric Bonnet Mathieu Salib Sébastien Y.P. Allain Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD) Metals X-ray diffraction recrystallization recovery rhase transformation synchrotron |
| title | Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD) |
| title_full | Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD) |
| title_fullStr | Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD) |
| title_full_unstemmed | Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD) |
| title_short | Real-Time Investigation of Recovery, Recrystallization and Austenite Transformation during Annealing of a Cold-Rolled Steel Using High Energy X-ray Diffraction (HEXRD) |
| title_sort | real time investigation of recovery recrystallization and austenite transformation during annealing of a cold rolled steel using high energy x ray diffraction hexrd |
| topic | X-ray diffraction recrystallization recovery rhase transformation synchrotron |
| url | https://www.mdpi.com/2075-4701/9/1/8 |
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