Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling
The complex deformation usually involves wide strain-rate change. However, few efforts have been devoted to investigate the effect of strain rate history on the tensile behavior of α + β titanium alloy. In present paper, tensile tests of Ti-6.6Al-3.3Mo-1.8Zr-0.29Si alloy were carr...
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MDPI AG
2018-09-01
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| Online Access: | http://www.mdpi.com/1996-1944/11/9/1591 |
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| author | Jun Zhang Yang Wang Bin Zhang Hanjun Huang Junhong Chen Peng Wang |
| author_facet | Jun Zhang Yang Wang Bin Zhang Hanjun Huang Junhong Chen Peng Wang |
| author_sort | Jun Zhang |
| collection | DOAJ |
| description | The complex deformation usually involves wide strain-rate change. However, few efforts have been devoted to investigate the effect of strain rate history on the tensile behavior of α + β titanium alloy. In present paper, tensile tests of Ti-6.6Al-3.3Mo-1.8Zr-0.29Si alloy were carried out under both constant and variable strain-rate conditions within the region from 10−3~500 s−1. A single stress pulse experimental technique was utilized to conduct the recovery tests. The strain-rate history effect was examined. It is found that the flow stress is independent on the strain rate history, though the alloy exhibits obvious positive strain rate sensitivity. The Taylor-Quinney coefficient of the plastic work converted to heat is proved as 0.9 at high strain rates. The cavitation fracture mechanism is revealed by microstructural observation over the full range explored. In basis of the experimental results and other pulished literatures, empirical Khan-Huang-Liang constitutive model was suitably modified to account for the strain-rate dependent behavior. Good agreement is achieved between the modeling prediction results and experimental data. |
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| id | doaj.art-6d35027783b242ae9c89245b8f7e9d04 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-13T00:09:09Z |
| publishDate | 2018-09-01 |
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| spelling | doaj.art-6d35027783b242ae9c89245b8f7e9d042022-12-22T03:11:08ZengMDPI AGMaterials1996-19442018-09-01119159110.3390/ma11091591ma11091591Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive ModelingJun Zhang0Yang Wang1Bin Zhang2Hanjun Huang3Junhong Chen4Peng Wang5Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaDepartment of Modern Mechanics, CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, ChinaDepartment of Modern Mechanics, CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaInstitute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, ChinaThe complex deformation usually involves wide strain-rate change. However, few efforts have been devoted to investigate the effect of strain rate history on the tensile behavior of α + β titanium alloy. In present paper, tensile tests of Ti-6.6Al-3.3Mo-1.8Zr-0.29Si alloy were carried out under both constant and variable strain-rate conditions within the region from 10−3~500 s−1. A single stress pulse experimental technique was utilized to conduct the recovery tests. The strain-rate history effect was examined. It is found that the flow stress is independent on the strain rate history, though the alloy exhibits obvious positive strain rate sensitivity. The Taylor-Quinney coefficient of the plastic work converted to heat is proved as 0.9 at high strain rates. The cavitation fracture mechanism is revealed by microstructural observation over the full range explored. In basis of the experimental results and other pulished literatures, empirical Khan-Huang-Liang constitutive model was suitably modified to account for the strain-rate dependent behavior. Good agreement is achieved between the modeling prediction results and experimental data.http://www.mdpi.com/1996-1944/11/9/1591tensile impactconstitutive modeladiabatic temperature risestrain rate history |
| spellingShingle | Jun Zhang Yang Wang Bin Zhang Hanjun Huang Junhong Chen Peng Wang Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling Materials tensile impact constitutive model adiabatic temperature rise strain rate history |
| title | Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling |
| title_full | Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling |
| title_fullStr | Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling |
| title_full_unstemmed | Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling |
| title_short | Strain Rate Sensitivity of Tensile Properties in Ti-6.6Al-3.3Mo-1.8Zr-0.29Si Alloy: Experiments and Constitutive Modeling |
| title_sort | strain rate sensitivity of tensile properties in ti 6 6al 3 3mo 1 8zr 0 29si alloy experiments and constitutive modeling |
| topic | tensile impact constitutive model adiabatic temperature rise strain rate history |
| url | http://www.mdpi.com/1996-1944/11/9/1591 |
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