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Modeling Bainitic Transformations during Press Hardening
We revisit recent findings on experimental and modeling investigations of bainitic transformations under the influence of external stresses and pre-strain during the press hardening process. Experimentally, the transformation kinetics in 22MnB5 under various tensile stresses are studied both on the...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7867011/ https://www.ncbi.nlm.nih.gov/pubmed/33572594 http://dx.doi.org/10.3390/ma14030654 |
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author | Lin, Mingxuan Zimmermann, Carina Wang, Kai Hunkel, Martin Prahl, Ulrich Spatschek, Robert |
author_facet | Lin, Mingxuan Zimmermann, Carina Wang, Kai Hunkel, Martin Prahl, Ulrich Spatschek, Robert |
author_sort | Lin, Mingxuan |
collection | PubMed |
description | We revisit recent findings on experimental and modeling investigations of bainitic transformations under the influence of external stresses and pre-strain during the press hardening process. Experimentally, the transformation kinetics in 22MnB5 under various tensile stresses are studied both on the macroscopic and microstructural level. In the bainitic microstructure, the variant selection effect is analyzed with an optimized prior-austenite grain reconstruction technique. The resulting observations are expressed phenomenologically using a autocatalytic transformation model, which serves for further scale bridging descriptions of the underlying thermo-chemo-mechanical coupling processes during the bainitic transformation. Using analyses of orientation relationships, thermodynamically consistent and nondiagonal phase field models are developed, which are supported by ab initio generated mechanical parameters. Applications are related to the microstructure evolution on the sheaf, subunit, precipitate and grain boundary level. |
format | Online Article Text |
id | pubmed-7867011 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-78670112021-02-07 Modeling Bainitic Transformations during Press Hardening Lin, Mingxuan Zimmermann, Carina Wang, Kai Hunkel, Martin Prahl, Ulrich Spatschek, Robert Materials (Basel) Article We revisit recent findings on experimental and modeling investigations of bainitic transformations under the influence of external stresses and pre-strain during the press hardening process. Experimentally, the transformation kinetics in 22MnB5 under various tensile stresses are studied both on the macroscopic and microstructural level. In the bainitic microstructure, the variant selection effect is analyzed with an optimized prior-austenite grain reconstruction technique. The resulting observations are expressed phenomenologically using a autocatalytic transformation model, which serves for further scale bridging descriptions of the underlying thermo-chemo-mechanical coupling processes during the bainitic transformation. Using analyses of orientation relationships, thermodynamically consistent and nondiagonal phase field models are developed, which are supported by ab initio generated mechanical parameters. Applications are related to the microstructure evolution on the sheaf, subunit, precipitate and grain boundary level. MDPI 2021-01-31 /pmc/articles/PMC7867011/ /pubmed/33572594 http://dx.doi.org/10.3390/ma14030654 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lin, Mingxuan Zimmermann, Carina Wang, Kai Hunkel, Martin Prahl, Ulrich Spatschek, Robert Modeling Bainitic Transformations during Press Hardening |
title | Modeling Bainitic Transformations during Press Hardening |
title_full | Modeling Bainitic Transformations during Press Hardening |
title_fullStr | Modeling Bainitic Transformations during Press Hardening |
title_full_unstemmed | Modeling Bainitic Transformations during Press Hardening |
title_short | Modeling Bainitic Transformations during Press Hardening |
title_sort | modeling bainitic transformations during press hardening |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7867011/ https://www.ncbi.nlm.nih.gov/pubmed/33572594 http://dx.doi.org/10.3390/ma14030654 |
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