Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy
Isothermal uniaxial compressions of a Ti-6Al-4V alloy were carried out in the temperature range of 800–1050 °C and strain rate range of 0.001–1 s−1. The effects of friction between the specimen and anvils as well as the increase in temperature caused by the high strain rate deformation were consider...
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| Format: | Article |
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MDPI AG
2018-04-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/4/256 |
| _version_ | 1818051070335647744 |
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| author | Ming Hu Limin Dong Zhiqiang Zhang Xiaofei Lei Rui Yang Yuhui Sha |
| author_facet | Ming Hu Limin Dong Zhiqiang Zhang Xiaofei Lei Rui Yang Yuhui Sha |
| author_sort | Ming Hu |
| collection | DOAJ |
| description | Isothermal uniaxial compressions of a Ti-6Al-4V alloy were carried out in the temperature range of 800–1050 °C and strain rate range of 0.001–1 s−1. The effects of friction between the specimen and anvils as well as the increase in temperature caused by the high strain rate deformation were considered, and flow curves were corrected as a result. Constitutive models were discussed based on the corrected flow curves. The correlation coefficient and average absolute relative error for the strain compensated Arrhenius-type constitutive model are 0.986 and 9.168%, respectively, while the values for a modified Johnson-Cook constitutive model are 0.924 and 22.673%, respectively. Therefore, the strain compensated Arrhenius-type constitutive model has a better prediction capability than a modified Johnson-Cook constitutive model. |
| first_indexed | 2024-12-10T11:03:31Z |
| format | Article |
| id | doaj.art-323d4d4e4e5e4671ba11f7593be8d476 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-10T11:03:31Z |
| publishDate | 2018-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-323d4d4e4e5e4671ba11f7593be8d4762022-12-22T01:51:37ZengMDPI AGMetals2075-47012018-04-018425610.3390/met8040256met8040256Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V AlloyMing Hu0Limin Dong1Zhiqiang Zhang2Xiaofei Lei3Rui Yang4Yuhui Sha5School of Materials Science and Engineering, Northeastern University, 3 Wenhua Road, Shenyang 110819, ChinaInstitute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, ChinaInstitute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, ChinaInstitute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, ChinaInstitute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, ChinaSchool of Materials Science and Engineering, Northeastern University, 3 Wenhua Road, Shenyang 110819, ChinaIsothermal uniaxial compressions of a Ti-6Al-4V alloy were carried out in the temperature range of 800–1050 °C and strain rate range of 0.001–1 s−1. The effects of friction between the specimen and anvils as well as the increase in temperature caused by the high strain rate deformation were considered, and flow curves were corrected as a result. Constitutive models were discussed based on the corrected flow curves. The correlation coefficient and average absolute relative error for the strain compensated Arrhenius-type constitutive model are 0.986 and 9.168%, respectively, while the values for a modified Johnson-Cook constitutive model are 0.924 and 22.673%, respectively. Therefore, the strain compensated Arrhenius-type constitutive model has a better prediction capability than a modified Johnson-Cook constitutive model.http://www.mdpi.com/2075-4701/8/4/256Ti-6Al-4V alloyisothermal compression testcorrection of flow curvesconstitutive model |
| spellingShingle | Ming Hu Limin Dong Zhiqiang Zhang Xiaofei Lei Rui Yang Yuhui Sha Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy Metals Ti-6Al-4V alloy isothermal compression test correction of flow curves constitutive model |
| title | Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy |
| title_full | Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy |
| title_fullStr | Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy |
| title_full_unstemmed | Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy |
| title_short | Correction of Flow Curves and Constitutive Modelling of a Ti-6Al-4V Alloy |
| title_sort | correction of flow curves and constitutive modelling of a ti 6al 4v alloy |
| topic | Ti-6Al-4V alloy isothermal compression test correction of flow curves constitutive model |
| url | http://www.mdpi.com/2075-4701/8/4/256 |
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