Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray Diffraction
In this work, the microstructural evolution during the dynamic transformation of austenite to bainite was directly observed by in-situ high energy synchrotron X-ray diffraction measurements during warm uniaxial compression performed at the P07 beamline of PETRA III, DESY (Deutsches Elektronen-Synchr...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/3/467 |
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| author | William Lemos Bevilaqua Jérémy Epp Heiner Meyer Juan Dong Hans Roelofs Alexandre da Silva Rocha Afonso Reguly |
| author_facet | William Lemos Bevilaqua Jérémy Epp Heiner Meyer Juan Dong Hans Roelofs Alexandre da Silva Rocha Afonso Reguly |
| author_sort | William Lemos Bevilaqua |
| collection | DOAJ |
| description | In this work, the microstructural evolution during the dynamic transformation of austenite to bainite was directly observed by in-situ high energy synchrotron X-ray diffraction measurements during warm uniaxial compression performed at the P07 beamline of PETRA III, DESY (Deutsches Elektronen-Synchrotron). Plastic deformation triggers the phase transformation, which is continuously stimulated by the introduction of dynamic dislocations into the austenite. This scenario accelerates the kinetics of bainite formation in comparison with conventional isothermal treatment. No mechanical stabilization of austenite was observed during dynamic transformation. Evidence of carbon partitioning between phases during plastic deformation was obtained. Further post-process investigations suggest that the bainitic microstructure developed during compression is oriented perpendicular to the loading direction. The findings open up new possibilities to design carbide-free bainitic microstructures directly via thermomechanical processing. |
| first_indexed | 2024-03-10T13:18:23Z |
| format | Article |
| id | doaj.art-6af4106b98c74d26a8e875fcc9e99ef0 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T13:18:23Z |
| publishDate | 2021-03-01 |
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| series | Metals |
| spelling | doaj.art-6af4106b98c74d26a8e875fcc9e99ef02023-11-21T10:14:40ZengMDPI AGMetals2075-47012021-03-0111346710.3390/met11030467Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray DiffractionWilliam Lemos Bevilaqua0Jérémy Epp1Heiner Meyer2Juan Dong3Hans Roelofs4Alexandre da Silva Rocha5Afonso Reguly6Post-Graduation Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, BrazilLeibniz Institute for Materials Engineering-IWT Bremen, Badgasteiner Str. 3, 28359 Bremen, GermanyLeibniz Institute for Materials Engineering-IWT Bremen, Badgasteiner Str. 3, 28359 Bremen, GermanyLeibniz Institute for Materials Engineering-IWT Bremen, Badgasteiner Str. 3, 28359 Bremen, GermanyR&D, Swiss Steel AG, Emmenweidstr. 90, 6020 Emmenbrücke, SwitzerlandPost-Graduation Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, BrazilPost-Graduation Program in Mining, Metallurgical and Materials Engineering (PPGE3M), Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Porto Alegre 91501-970, BrazilIn this work, the microstructural evolution during the dynamic transformation of austenite to bainite was directly observed by in-situ high energy synchrotron X-ray diffraction measurements during warm uniaxial compression performed at the P07 beamline of PETRA III, DESY (Deutsches Elektronen-Synchrotron). Plastic deformation triggers the phase transformation, which is continuously stimulated by the introduction of dynamic dislocations into the austenite. This scenario accelerates the kinetics of bainite formation in comparison with conventional isothermal treatment. No mechanical stabilization of austenite was observed during dynamic transformation. Evidence of carbon partitioning between phases during plastic deformation was obtained. Further post-process investigations suggest that the bainitic microstructure developed during compression is oriented perpendicular to the loading direction. The findings open up new possibilities to design carbide-free bainitic microstructures directly via thermomechanical processing.https://www.mdpi.com/2075-4701/11/3/467dynamic transformationthermomechanical processingbainitein-situ X-ray diffraction |
| spellingShingle | William Lemos Bevilaqua Jérémy Epp Heiner Meyer Juan Dong Hans Roelofs Alexandre da Silva Rocha Afonso Reguly Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray Diffraction Metals dynamic transformation thermomechanical processing bainite in-situ X-ray diffraction |
| title | Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray Diffraction |
| title_full | Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray Diffraction |
| title_fullStr | Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray Diffraction |
| title_full_unstemmed | Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray Diffraction |
| title_short | Revealing the Dynamic Transformation of Austenite to Bainite during Uniaxial Warm Compression through In-Situ Synchrotron X-ray Diffraction |
| title_sort | revealing the dynamic transformation of austenite to bainite during uniaxial warm compression through in situ synchrotron x ray diffraction |
| topic | dynamic transformation thermomechanical processing bainite in-situ X-ray diffraction |
| url | https://www.mdpi.com/2075-4701/11/3/467 |
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