Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain rates
The effect of deformation temperature and strain rate on the hot deformation behavior and dual-phase microstructure evolution of the titanium alloy Ti62A was examined using electron backscatter diffraction. In general, the activation energy of Ti62A during steady-state deformation in the ( α + β ) p...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/acc783 |
| _version_ | 1797746494194843648 |
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| author | Haiting Guan Qiang Fu Wei Xiang Wu Min Yunsen Xiong Wuhua Yuan |
| author_facet | Haiting Guan Qiang Fu Wei Xiang Wu Min Yunsen Xiong Wuhua Yuan |
| author_sort | Haiting Guan |
| collection | DOAJ |
| description | The effect of deformation temperature and strain rate on the hot deformation behavior and dual-phase microstructure evolution of the titanium alloy Ti62A was examined using electron backscatter diffraction. In general, the activation energy of Ti62A during steady-state deformation in the ( α + β ) phase is 295 kJ mol ^−1 . The primary recovery mechanisms of the β phase during hot deformation are dynamic recovery and dynamic recrystallization (DRX). Moreover, discontinuous DRX occurs at low temperatures and high strain rates, whereas continuous DRX occurs at high temperatures and low strain rates. Furthermore, high strain rates in the ( α + β ) phase and high deformation temperatures are advantageous to dynamic phase changes during dynamic transformation (DT). The β phase penetrates the lamellar α _s phase, causing fragmentation and spheroidization of the α _s phase. Finally, DT begins more easily in the fine α _s phase than in the coarse α _p phase. |
| first_indexed | 2024-03-12T15:37:37Z |
| format | Article |
| id | doaj.art-b5f39d954f304377aceef23f2f431ca1 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:37:37Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-b5f39d954f304377aceef23f2f431ca12023-08-09T16:08:55ZengIOP PublishingMaterials Research Express2053-15912023-01-0110404650310.1088/2053-1591/acc783Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain ratesHaiting Guan0Qiang Fu1Wei Xiang2Wu Min3Yunsen Xiong4Wuhua Yuan5https://orcid.org/0000-0002-6905-7449College of Materials Science and Engineering, Hunan University , Changsha 410082, People’s Republic of ChinaCollege of Materials Science and Engineering, Hunan University , Changsha 410082, People’s Republic of ChinaCollege of Materials Science and Engineering, Hunan University , Changsha 410082, People’s Republic of China; Deyang Wanhang Die Forging Co., Ltd, China National Erzhong Group Co., Deyang 618013, People’s Republic of ChinaDeyang Wanhang Die Forging Co., Ltd, China National Erzhong Group Co., Deyang 618013, People’s Republic of ChinaDeyang Wanhang Die Forging Co., Ltd, China National Erzhong Group Co., Deyang 618013, People’s Republic of ChinaCollege of Materials Science and Engineering, Hunan University , Changsha 410082, People’s Republic of ChinaThe effect of deformation temperature and strain rate on the hot deformation behavior and dual-phase microstructure evolution of the titanium alloy Ti62A was examined using electron backscatter diffraction. In general, the activation energy of Ti62A during steady-state deformation in the ( α + β ) phase is 295 kJ mol ^−1 . The primary recovery mechanisms of the β phase during hot deformation are dynamic recovery and dynamic recrystallization (DRX). Moreover, discontinuous DRX occurs at low temperatures and high strain rates, whereas continuous DRX occurs at high temperatures and low strain rates. Furthermore, high strain rates in the ( α + β ) phase and high deformation temperatures are advantageous to dynamic phase changes during dynamic transformation (DT). The β phase penetrates the lamellar α _s phase, causing fragmentation and spheroidization of the α _s phase. Finally, DT begins more easily in the fine α _s phase than in the coarse α _p phase.https://doi.org/10.1088/2053-1591/acc783Ti62A titanium alloymicrostructureEBSDhot compression deformation behavior |
| spellingShingle | Haiting Guan Qiang Fu Wei Xiang Wu Min Yunsen Xiong Wuhua Yuan Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain rates Materials Research Express Ti62A titanium alloy microstructure EBSD hot compression deformation behavior |
| title | Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain rates |
| title_full | Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain rates |
| title_fullStr | Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain rates |
| title_full_unstemmed | Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain rates |
| title_short | Flow behavior and dynamic transformation of titanium alloy Ti62A during deformation at different temperatures and strain rates |
| title_sort | flow behavior and dynamic transformation of titanium alloy ti62a during deformation at different temperatures and strain rates |
| topic | Ti62A titanium alloy microstructure EBSD hot compression deformation behavior |
| url | https://doi.org/10.1088/2053-1591/acc783 |
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