Constitutive equation and hot processing map of TA15 titanium alloy
The stress-strain curves of TA15 titanium alloy at 750 ∼ 950 °C and 0.001 ∼ 1 s ^−1 were obtained by hot compression with Gleeble-1500D. Based on the compression experimental data of TA15 titanium alloy, the Johnson-Cook high temperature thermal deformation constitutive equation was established. By...
| 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/ab8490 |
| _version_ | 1827868797040590848 |
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| author | Hongchao Ji Zhanshuo Peng Weichi Pei Long Xin Zheng Ma Yonghao Lu |
| author_facet | Hongchao Ji Zhanshuo Peng Weichi Pei Long Xin Zheng Ma Yonghao Lu |
| author_sort | Hongchao Ji |
| collection | DOAJ |
| description | The stress-strain curves of TA15 titanium alloy at 750 ∼ 950 °C and 0.001 ∼ 1 s ^−1 were obtained by hot compression with Gleeble-1500D. Based on the compression experimental data of TA15 titanium alloy, the Johnson-Cook high temperature thermal deformation constitutive equation was established. By calculating the constitutive equation, the flow stress was compared with the measured stress-strain curve, and the accuracy of the equation was verified. Then, based on the theory of hot processing map of dynamic materials, the hot processing map is drawn when the strain is 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6. The reasonable range of hot processing map of TA15 titanium alloy was determined. When the temperature is between 750 °C–875 °C, the power dissipation factor decreases with increasing strain rate. The maximum power dissipation is distributed between 825 °C–950 °C. This indicates that recrystallization occurred within this range. The safe zone is mainly concentrated in the temperature range of 885 °C–950 °C, the strain rate is less than 0.1 s ^−1 . It can be seen that instability does not occur in the high temperature and low strain region. Therefore, at 885 ≤ T ≤ 950 °C, 0.001 ≤ $\dot{\varepsilon }$ ≤ 0.1 s ^−1 or 800 ≤ T ≤ 875 °C, 0.001 ≤ $\dot{\varepsilon }$ ≤ 0.002 s ^−1 , it is reasonable to perform high temperature deformation on TA15 titanium alloy. |
| first_indexed | 2024-03-12T15:36:30Z |
| format | Article |
| id | doaj.art-92b880458b154d1ca30808abecc3282b |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:36:30Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-92b880458b154d1ca30808abecc3282b2023-08-09T16:11:42ZengIOP PublishingMaterials Research Express2053-15912020-01-017404650810.1088/2053-1591/ab8490Constitutive equation and hot processing map of TA15 titanium alloyHongchao Ji0https://orcid.org/0000-0002-1592-6362Zhanshuo Peng1Weichi Pei2Long Xin3Zheng Ma4Yonghao Lu5National Center for Materials Service Safety, University of Science and Technology Beijing , Beijing 100083, People’s Republic of China; College of Mechanical Engineering, North China University of Science and Technology , Tangshan 063210, People’s Republic of ChinaCollege of Mechanical Engineering, North China University of Science and Technology , Tangshan 063210, People’s Republic of ChinaCollege of Mechanical Engineering, North China University of Science and Technology , Tangshan 063210, People’s Republic of China; School of Mechanical Engineering, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaCollege of Mechanical Engineering, North China University of Science and Technology , Tangshan 063210, People’s Republic of ChinaNational Center for Materials Service Safety, University of Science and Technology Beijing , Beijing 100083, People’s Republic of ChinaThe stress-strain curves of TA15 titanium alloy at 750 ∼ 950 °C and 0.001 ∼ 1 s ^−1 were obtained by hot compression with Gleeble-1500D. Based on the compression experimental data of TA15 titanium alloy, the Johnson-Cook high temperature thermal deformation constitutive equation was established. By calculating the constitutive equation, the flow stress was compared with the measured stress-strain curve, and the accuracy of the equation was verified. Then, based on the theory of hot processing map of dynamic materials, the hot processing map is drawn when the strain is 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6. The reasonable range of hot processing map of TA15 titanium alloy was determined. When the temperature is between 750 °C–875 °C, the power dissipation factor decreases with increasing strain rate. The maximum power dissipation is distributed between 825 °C–950 °C. This indicates that recrystallization occurred within this range. The safe zone is mainly concentrated in the temperature range of 885 °C–950 °C, the strain rate is less than 0.1 s ^−1 . It can be seen that instability does not occur in the high temperature and low strain region. Therefore, at 885 ≤ T ≤ 950 °C, 0.001 ≤ $\dot{\varepsilon }$ ≤ 0.1 s ^−1 or 800 ≤ T ≤ 875 °C, 0.001 ≤ $\dot{\varepsilon }$ ≤ 0.002 s ^−1 , it is reasonable to perform high temperature deformation on TA15 titanium alloy.https://doi.org/10.1088/2053-1591/ab8490TA15 titanium alloyconstitutive equationhot processing map |
| spellingShingle | Hongchao Ji Zhanshuo Peng Weichi Pei Long Xin Zheng Ma Yonghao Lu Constitutive equation and hot processing map of TA15 titanium alloy Materials Research Express TA15 titanium alloy constitutive equation hot processing map |
| title | Constitutive equation and hot processing map of TA15 titanium alloy |
| title_full | Constitutive equation and hot processing map of TA15 titanium alloy |
| title_fullStr | Constitutive equation and hot processing map of TA15 titanium alloy |
| title_full_unstemmed | Constitutive equation and hot processing map of TA15 titanium alloy |
| title_short | Constitutive equation and hot processing map of TA15 titanium alloy |
| title_sort | constitutive equation and hot processing map of ta15 titanium alloy |
| topic | TA15 titanium alloy constitutive equation hot processing map |
| url | https://doi.org/10.1088/2053-1591/ab8490 |
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