Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steel
The flow behavior of Nb–V–Mo microalloyed steel at different deformation parameters was investigated using isothermal compression tests. The microstructures of the specimens after deformation were observed through the use of a metallographic microscope. The results indicated that the deformation tem...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab9b14 |
| _version_ | 1827868690023972864 |
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| author | Ning Li Wilasinee Kingkam Renheng Han Ming Tang Yongtao Yao Hexin Zhang Chengzhi Zhao |
| author_facet | Ning Li Wilasinee Kingkam Renheng Han Ming Tang Yongtao Yao Hexin Zhang Chengzhi Zhao |
| author_sort | Ning Li |
| collection | DOAJ |
| description | The flow behavior of Nb–V–Mo microalloyed steel at different deformation parameters was investigated using isothermal compression tests. The microstructures of the specimens after deformation were observed through the use of a metallographic microscope. The results indicated that the deformation temperature had a significant effect on the grain size of the deformed specimen and the average size of grains increases with corresponding increase in temperature in the range of 800 °C–1100 °C. The dislocations and substructures of the specimens after deformation were characterized using TEM. The bulged grain boundary was observed through TEM when the specimen was deformed at 1100 °C and 1 s ^−1 . The effect of the strain rate on the dynamic recrystallization behavior was investigated using electron backscatter diffraction (EBSD). The EBSD results indicated that the fraction of low-angle grain boundaries decreased with a corresponding decrease in strain rate, and the average sub-boundary misorientation increased with a decreasing strain rate. The continuous dynamic recrystallization mechanism was determined through EBSD analysis. |
| first_indexed | 2024-03-12T15:35:58Z |
| format | Article |
| id | doaj.art-054fac0db4d342b0b1bd139e6320c722 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:35:58Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-054fac0db4d342b0b1bd139e6320c7222023-08-09T16:13:28ZengIOP PublishingMaterials Research Express2053-15912020-01-017606652110.1088/2053-1591/ab9b14Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steelNing Li0Wilasinee Kingkam1Renheng Han2Ming Tang3Yongtao Yao4https://orcid.org/0000-0001-8294-2525Hexin Zhang5https://orcid.org/0000-0002-5793-5013Chengzhi Zhao6https://orcid.org/0000-0002-4323-0098Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin, People’s Republic of ChinaResearch and Development Division, Thailand Institute of Nuclear Technology , Nakorn Nayok, ThailandKey Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin, People’s Republic of ChinaKey Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin, People’s Republic of ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology , Harbin, People’s Republic of ChinaKey Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin, People’s Republic of ChinaKey Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin, People’s Republic of ChinaThe flow behavior of Nb–V–Mo microalloyed steel at different deformation parameters was investigated using isothermal compression tests. The microstructures of the specimens after deformation were observed through the use of a metallographic microscope. The results indicated that the deformation temperature had a significant effect on the grain size of the deformed specimen and the average size of grains increases with corresponding increase in temperature in the range of 800 °C–1100 °C. The dislocations and substructures of the specimens after deformation were characterized using TEM. The bulged grain boundary was observed through TEM when the specimen was deformed at 1100 °C and 1 s ^−1 . The effect of the strain rate on the dynamic recrystallization behavior was investigated using electron backscatter diffraction (EBSD). The EBSD results indicated that the fraction of low-angle grain boundaries decreased with a corresponding decrease in strain rate, and the average sub-boundary misorientation increased with a decreasing strain rate. The continuous dynamic recrystallization mechanism was determined through EBSD analysis.https://doi.org/10.1088/2053-1591/ab9b14microalloyed steeldynamic recrystallizationdislocationmicrostructure evolution |
| spellingShingle | Ning Li Wilasinee Kingkam Renheng Han Ming Tang Yongtao Yao Hexin Zhang Chengzhi Zhao Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steel Materials Research Express microalloyed steel dynamic recrystallization dislocation microstructure evolution |
| title | Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steel |
| title_full | Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steel |
| title_fullStr | Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steel |
| title_full_unstemmed | Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steel |
| title_short | Effect of deformation parameters on microstructural evolution during hot compression of Nb–V–Mo microalloyed steel |
| title_sort | effect of deformation parameters on microstructural evolution during hot compression of nb v mo microalloyed steel |
| topic | microalloyed steel dynamic recrystallization dislocation microstructure evolution |
| url | https://doi.org/10.1088/2053-1591/ab9b14 |
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