Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation Study
A bainite dual-phase (FB) steel containing polygonal ferrite and granular bainite is thermo-mechanically rolled, followed by an accelerated cooling. Two different cooling rates are applied to obtain two different materials. The aim of the study is to explore the reasons for the differences in the me...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/4/673 |
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| author | Francisco-José Gallardo-Basile Franz Roters Robin M. Jentner Kinshuk Srivastava Sebastian Scholl Martin Diehl |
| author_facet | Francisco-José Gallardo-Basile Franz Roters Robin M. Jentner Kinshuk Srivastava Sebastian Scholl Martin Diehl |
| author_sort | Francisco-José Gallardo-Basile |
| collection | DOAJ |
| description | A bainite dual-phase (FB) steel containing polygonal ferrite and granular bainite is thermo-mechanically rolled, followed by an accelerated cooling. Two different cooling rates are applied to obtain two different materials. The aim of the study is to explore the reasons for the differences in the mechanical response experimentally observed for these two materials which are modeled by means of high-resolution crystal plasticity simulations with a phenomenological constitutive description. First, the CP parameters of the individual constituents are determined. Second, different three-dimensional (3D) representative volume elements (RVEs)—one of which includes the substructure of bainite—are used to study the mechanical properties of both FB microstructures. It is shown that, in contrast to the macroscopic response, the microscopic response differs among the RVEs. Third, a comparison of both materials is performed by analyzing their stress–strain response. The onset of plasticity in granular bainite is found to be different for both materials in addition to the strain partitioning, although they both obeyed the iso-work assumption. Finally, a parameter study is carried out in order to investigate the correlation between different microstructures and damage initiation that can be seen experimentally in this steel. It is shown that the difference in ultimate elongation may depend on whether the first voids appear within polygonal ferrite or at the phase boundary. |
| first_indexed | 2024-03-11T05:07:36Z |
| format | Article |
| id | doaj.art-f3a8352cd4a5482bba28960c541b93ff |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T05:07:36Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-f3a8352cd4a5482bba28960c541b93ff2023-11-17T18:51:52ZengMDPI AGCrystals2073-43522023-04-0113467310.3390/cryst13040673Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation StudyFrancisco-José Gallardo-Basile0Franz Roters1Robin M. Jentner2Kinshuk Srivastava3Sebastian Scholl4Martin Diehl5Max–Planck–Institut für Eisenforschung, Max–Planck–Straße 1, 40237 Düsseldorf, GermanyMax–Planck–Institut für Eisenforschung, Max–Planck–Straße 1, 40237 Düsseldorf, GermanyMax–Planck–Institut für Eisenforschung, Max–Planck–Straße 1, 40237 Düsseldorf, GermanyAG der Dillinger Hüttenwerke, Werkstraße 1, 66763 Dillingen/Saar, GermanyAG der Dillinger Hüttenwerke, Werkstraße 1, 66763 Dillingen/Saar, GermanyDepartment of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001 Leuven, BelgiumA bainite dual-phase (FB) steel containing polygonal ferrite and granular bainite is thermo-mechanically rolled, followed by an accelerated cooling. Two different cooling rates are applied to obtain two different materials. The aim of the study is to explore the reasons for the differences in the mechanical response experimentally observed for these two materials which are modeled by means of high-resolution crystal plasticity simulations with a phenomenological constitutive description. First, the CP parameters of the individual constituents are determined. Second, different three-dimensional (3D) representative volume elements (RVEs)—one of which includes the substructure of bainite—are used to study the mechanical properties of both FB microstructures. It is shown that, in contrast to the macroscopic response, the microscopic response differs among the RVEs. Third, a comparison of both materials is performed by analyzing their stress–strain response. The onset of plasticity in granular bainite is found to be different for both materials in addition to the strain partitioning, although they both obeyed the iso-work assumption. Finally, a parameter study is carried out in order to investigate the correlation between different microstructures and damage initiation that can be seen experimentally in this steel. It is shown that the difference in ultimate elongation may depend on whether the first voids appear within polygonal ferrite or at the phase boundary.https://www.mdpi.com/2073-4352/13/4/673granular bainitepolygonal ferritecrystal plasticityinverse modelingmicrostructure modelingDAMASK |
| spellingShingle | Francisco-José Gallardo-Basile Franz Roters Robin M. Jentner Kinshuk Srivastava Sebastian Scholl Martin Diehl Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation Study Crystals granular bainite polygonal ferrite crystal plasticity inverse modeling microstructure modeling DAMASK |
| title | Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation Study |
| title_full | Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation Study |
| title_fullStr | Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation Study |
| title_full_unstemmed | Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation Study |
| title_short | Modeling Bainite Dual-Phase Steels: A High-Resolution Crystal Plasticity Simulation Study |
| title_sort | modeling bainite dual phase steels a high resolution crystal plasticity simulation study |
| topic | granular bainite polygonal ferrite crystal plasticity inverse modeling microstructure modeling DAMASK |
| url | https://www.mdpi.com/2073-4352/13/4/673 |
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