Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloy
This study presents a comprehensive analysis of the hot deformation behavior of the Ti-55511 alloy over a temperature range of 700 °C–950 °C and strain rates from 0.001 s⁻1 to 1 s⁻1, utilizing isothermal compression testing alongside electron backscatter diffraction (EBSD) and transmission electron...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424025857 |
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| author | Xintong Wang Pengwei Liu Chuangxiong Liang Tonggang Lu Tianyi Feng Haozhe Niu Yue Dong Xingang Liu |
| author_facet | Xintong Wang Pengwei Liu Chuangxiong Liang Tonggang Lu Tianyi Feng Haozhe Niu Yue Dong Xingang Liu |
| author_sort | Xintong Wang |
| collection | DOAJ |
| description | This study presents a comprehensive analysis of the hot deformation behavior of the Ti-55511 alloy over a temperature range of 700 °C–950 °C and strain rates from 0.001 s⁻1 to 1 s⁻1, utilizing isothermal compression testing alongside electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). The investigation focuses on the influence of various hot deformation parameters on the microstructural evolution of distinct phase regions within the alloy. At higher strain rates (0.1 s⁻1 to 1 s⁻1), the primary softening mechanisms for β grains in the α+β two-phase region are identified as continuous dynamic recrystallization (CDRX) and dynamic recovery (DRV), while in the β single-phase region, discontinuous dynamic recrystallization (DDRX) and DRV predominate. Conversely, at lower strain rates (0.001 s⁻1 to 0.01 s⁻1), the softening of β grains in the two-phase region is primarily governed by DRV, whereas in the single-phase region, DDRX and CDRX are the dominant mechanisms. Additionally, based on stress-strain data corrected for friction and temperature effects, an elastoplastic constitutive model is developed, incorporating strain rate and temperature to predict peak stress in the two-phase regions of the Ti-55511 alloy. This examination of the thermal deformation behavior and microstructural evolution of the Ti-55511 alloy provides significant theoretical and practical insights for optimizing the manufacturing processes of aviation die forging, tailoring microstructures, and enhancing hot working techniques. |
| format | Article |
| id | doaj-art-6776745b0ac0479197aa67c8fef6ecdb |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-6776745b0ac0479197aa67c8fef6ecdb2025-08-20T02:35:30ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01336780679710.1016/j.jmrt.2024.11.057Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloyXintong Wang0Pengwei Liu1Chuangxiong Liang2Tonggang Lu3Tianyi Feng4Haozhe Niu5Yue Dong6Xingang Liu7School of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, China; Key Laboratory of Advanced Forging & StampingTechnology and Science inistry of Education of China, Yanshan University, Qinhuangdao, 066004, China; Corresponding author. School of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, China.School of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaCollege of Mechanical and Automotive Engineering, Ningbo University of Technology, Ningbo, 315336, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaThis study presents a comprehensive analysis of the hot deformation behavior of the Ti-55511 alloy over a temperature range of 700 °C–950 °C and strain rates from 0.001 s⁻1 to 1 s⁻1, utilizing isothermal compression testing alongside electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). The investigation focuses on the influence of various hot deformation parameters on the microstructural evolution of distinct phase regions within the alloy. At higher strain rates (0.1 s⁻1 to 1 s⁻1), the primary softening mechanisms for β grains in the α+β two-phase region are identified as continuous dynamic recrystallization (CDRX) and dynamic recovery (DRV), while in the β single-phase region, discontinuous dynamic recrystallization (DDRX) and DRV predominate. Conversely, at lower strain rates (0.001 s⁻1 to 0.01 s⁻1), the softening of β grains in the two-phase region is primarily governed by DRV, whereas in the single-phase region, DDRX and CDRX are the dominant mechanisms. Additionally, based on stress-strain data corrected for friction and temperature effects, an elastoplastic constitutive model is developed, incorporating strain rate and temperature to predict peak stress in the two-phase regions of the Ti-55511 alloy. This examination of the thermal deformation behavior and microstructural evolution of the Ti-55511 alloy provides significant theoretical and practical insights for optimizing the manufacturing processes of aviation die forging, tailoring microstructures, and enhancing hot working techniques.http://www.sciencedirect.com/science/article/pii/S2238785424025857Thermal deformationDynamic recrystallizationConstitutive modelTi-55511 titanium alloy |
| spellingShingle | Xintong Wang Pengwei Liu Chuangxiong Liang Tonggang Lu Tianyi Feng Haozhe Niu Yue Dong Xingang Liu Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloy Journal of Materials Research and Technology Thermal deformation Dynamic recrystallization Constitutive model Ti-55511 titanium alloy |
| title | Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloy |
| title_full | Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloy |
| title_fullStr | Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloy |
| title_full_unstemmed | Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloy |
| title_short | Investigation on the thermal deformation mechanisms and constitutive model of Ti-55511 titanium alloy |
| title_sort | investigation on the thermal deformation mechanisms and constitutive model of ti 55511 titanium alloy |
| topic | Thermal deformation Dynamic recrystallization Constitutive model Ti-55511 titanium alloy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424025857 |
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