Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steel
The hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V complex microalloyed high strength steel under temperatures ranging from 840 to 1040 °C and strain rates varying from 0.01 to 10 s−1 were studied by using thermal-mechanical simulation (Gleeble-3800), optic...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423014436 |
| _version_ | 1797745231636987904 |
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| author | Ke Zhang Tenghao Zhang Mingya Zhang Zihao Chen Hongbo Pan Gengwei Yang Yanguang Cao Zhaodong Li Xi Zhang |
| author_facet | Ke Zhang Tenghao Zhang Mingya Zhang Zihao Chen Hongbo Pan Gengwei Yang Yanguang Cao Zhaodong Li Xi Zhang |
| author_sort | Ke Zhang |
| collection | DOAJ |
| description | The hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V complex microalloyed high strength steel under temperatures ranging from 840 to 1040 °C and strain rates varying from 0.01 to 10 s−1 were studied by using thermal-mechanical simulation (Gleeble-3800), optical microscopy (OM), and electron backscatter diffraction (EBSD). The true stress–strain curves of the investigated steel were obtained under the different deformation conditions, the thermal deformation activation energy was calculated, the thermal constitutive equations based on the true stress–strain curves were established, and the 3D power dissipation diagrams, the 3D plastic instability diagrams, and the thermal processing maps under different true strains were drawn. The results show that the flow stress curves are of dynamic recrystallization type at 960–1040 °C and strain rate of 0.01 s−1 and at 1040 °C and strain rate of 0.1 s−1, and the peak stress decreases gradually with the increase of the deformation temperature and the decrease of the strain rate. The hot deformation activation energy of Ti–V microalloyed steel was calculated to be 349.681 kJ/mol. The average grain size of austenite first decreases and then increases with increasing the strain rate under the deformation temperatures of 1000 °C and 1040 °C, and has the smallest value of 15.0 μm and 16.1 μm, respectively, after deformation at the strain rate of 1 s−1. With the true strain increasing from 0.2 to 0.6, the area occupied by the destabilized region increases and the machinable region area decreases. It reveals that the most available hot processing parameter ranges of Ti–V complex microalloyed steel are at the temperature range of 1000∼1040 °C with the strain rate of 0.01–1 s−1. |
| first_indexed | 2024-03-12T15:20:26Z |
| format | Article |
| id | doaj.art-fcf05bffd203484a8d5e4c6ea53d9cf7 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:26Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-fcf05bffd203484a8d5e4c6ea53d9cf72023-08-11T05:33:53ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012542014215Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steelKe Zhang0Tenghao Zhang1Mingya Zhang2Zihao Chen3Hongbo Pan4Gengwei Yang5Yanguang Cao6Zhaodong Li7Xi Zhang8Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, Maanshan 243002, China; School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, ChinaAnhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, Maanshan 243002, China; School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, ChinaAnhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, Maanshan 243002, China; School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, China; Corresponding author. Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, Maanshan, 243002, China.Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, Maanshan 243002, China; School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, ChinaAnhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology, Maanshan 243002, China; School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaDepartment of Structural Steels, Central Iron and Steel Research Institute, Beijing 100081, ChinaDepartment of Structural Steels, Central Iron and Steel Research Institute, Beijing 100081, ChinaTianjin Bridge Welding Materials Group Co., Ltd., Tianjin 300385, ChinaThe hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V complex microalloyed high strength steel under temperatures ranging from 840 to 1040 °C and strain rates varying from 0.01 to 10 s−1 were studied by using thermal-mechanical simulation (Gleeble-3800), optical microscopy (OM), and electron backscatter diffraction (EBSD). The true stress–strain curves of the investigated steel were obtained under the different deformation conditions, the thermal deformation activation energy was calculated, the thermal constitutive equations based on the true stress–strain curves were established, and the 3D power dissipation diagrams, the 3D plastic instability diagrams, and the thermal processing maps under different true strains were drawn. The results show that the flow stress curves are of dynamic recrystallization type at 960–1040 °C and strain rate of 0.01 s−1 and at 1040 °C and strain rate of 0.1 s−1, and the peak stress decreases gradually with the increase of the deformation temperature and the decrease of the strain rate. The hot deformation activation energy of Ti–V microalloyed steel was calculated to be 349.681 kJ/mol. The average grain size of austenite first decreases and then increases with increasing the strain rate under the deformation temperatures of 1000 °C and 1040 °C, and has the smallest value of 15.0 μm and 16.1 μm, respectively, after deformation at the strain rate of 1 s−1. With the true strain increasing from 0.2 to 0.6, the area occupied by the destabilized region increases and the machinable region area decreases. It reveals that the most available hot processing parameter ranges of Ti–V complex microalloyed steel are at the temperature range of 1000∼1040 °C with the strain rate of 0.01–1 s−1.http://www.sciencedirect.com/science/article/pii/S2238785423014436Ti–V microalloyed high strength steelHot deformation behaviorConstitutive equationDynamic recrystallizationProcessing map |
| spellingShingle | Ke Zhang Tenghao Zhang Mingya Zhang Zihao Chen Hongbo Pan Gengwei Yang Yanguang Cao Zhaodong Li Xi Zhang Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steel Journal of Materials Research and Technology Ti–V microalloyed high strength steel Hot deformation behavior Constitutive equation Dynamic recrystallization Processing map |
| title | Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steel |
| title_full | Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steel |
| title_fullStr | Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steel |
| title_full_unstemmed | Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steel |
| title_short | Hot deformation behavior, dynamic recrystallization mechanism and processing maps of Ti–V microalloyed high strength steel |
| title_sort | hot deformation behavior dynamic recrystallization mechanism and processing maps of ti v microalloyed high strength steel |
| topic | Ti–V microalloyed high strength steel Hot deformation behavior Constitutive equation Dynamic recrystallization Processing map |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423014436 |
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