Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformation
Abstract Metastable β titanium alloys are promising materials for lightweight and energy‐efficient applications due to their high strength and low density. Thermal–mechanical processing (TMP) is one of the most effective ways to improve the mechanical properties of such alloys. This paper describes...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-12-01
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| Series: | International Journal of Mechanical System Dynamics |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/msd2.12056 |
| _version_ | 1797978706782715904 |
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| author | Xi Pan Pei Li Yang Chen Zhixiang Qi Hao Xu Yuede Cao Yuan Lei Gong Zheng Guang Chen |
| author_facet | Xi Pan Pei Li Yang Chen Zhixiang Qi Hao Xu Yuede Cao Yuan Lei Gong Zheng Guang Chen |
| author_sort | Xi Pan |
| collection | DOAJ |
| description | Abstract Metastable β titanium alloys are promising materials for lightweight and energy‐efficient applications due to their high strength and low density. Thermal–mechanical processing (TMP) is one of the most effective ways to improve the mechanical properties of such alloys. This paper describes a systematic TMP investigation on a new metastable β titanium alloy, including its dynamic mechanical behavior, and microstructure evolution, via isothermal compression tests and electron back‐scattered diffraction characterizations. The results show that the compression stress increases with an increase in the strain rate and a decrease in the temperature. After yielding, the compression stress–strain pattern shows flow‐softening behavior at a low temperature and a high strain rate, while sustaining a steady flow state at a high temperature and a low strain rate. The temperature‐rise effect contributes to a large degree of flow softening at high strain rates. After the correction for temperature rise, the stress–strain constitutive relationships are established, showing that the compression behavior varies in different phase regions. Based on the microstructure characterizations, it is found that the dynamic recovery and dynamic recrystallization dominate the hot deformations in β phase region and at low strain rates, while the deformation band as an additional product is found in α + β phase region and at high strain rates. The results contribute to a better understanding of the TMP for the considered alloy and may also represent a useful database for β‐Ti alloy applications in lightweight mechanical systems. |
| first_indexed | 2024-04-11T05:27:16Z |
| format | Article |
| id | doaj.art-8d1e9667d8f140e0be7ebd588173dfe2 |
| institution | Directory Open Access Journal |
| issn | 2767-1402 |
| language | English |
| last_indexed | 2024-04-11T05:27:16Z |
| publishDate | 2022-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Mechanical System Dynamics |
| spelling | doaj.art-8d1e9667d8f140e0be7ebd588173dfe22022-12-23T05:51:41ZengWileyInternational Journal of Mechanical System Dynamics2767-14022022-12-012432533810.1002/msd2.12056Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformationXi Pan0Pei Li1Yang Chen2Zhixiang Qi3Hao Xu4Yuede Cao5Yuan Lei6Gong Zheng7Guang Chen8MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaMIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials and Design, Ministry of Education Nanjing University of Science and Technology Nanjing ChinaAbstract Metastable β titanium alloys are promising materials for lightweight and energy‐efficient applications due to their high strength and low density. Thermal–mechanical processing (TMP) is one of the most effective ways to improve the mechanical properties of such alloys. This paper describes a systematic TMP investigation on a new metastable β titanium alloy, including its dynamic mechanical behavior, and microstructure evolution, via isothermal compression tests and electron back‐scattered diffraction characterizations. The results show that the compression stress increases with an increase in the strain rate and a decrease in the temperature. After yielding, the compression stress–strain pattern shows flow‐softening behavior at a low temperature and a high strain rate, while sustaining a steady flow state at a high temperature and a low strain rate. The temperature‐rise effect contributes to a large degree of flow softening at high strain rates. After the correction for temperature rise, the stress–strain constitutive relationships are established, showing that the compression behavior varies in different phase regions. Based on the microstructure characterizations, it is found that the dynamic recovery and dynamic recrystallization dominate the hot deformations in β phase region and at low strain rates, while the deformation band as an additional product is found in α + β phase region and at high strain rates. The results contribute to a better understanding of the TMP for the considered alloy and may also represent a useful database for β‐Ti alloy applications in lightweight mechanical systems.https://doi.org/10.1002/msd2.12056metastable β titanium alloydynamic mechanical behaviormicrostructure evolutionrestoration mechanism |
| spellingShingle | Xi Pan Pei Li Yang Chen Zhixiang Qi Hao Xu Yuede Cao Yuan Lei Gong Zheng Guang Chen Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformation International Journal of Mechanical System Dynamics metastable β titanium alloy dynamic mechanical behavior microstructure evolution restoration mechanism |
| title | Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformation |
| title_full | Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformation |
| title_fullStr | Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformation |
| title_full_unstemmed | Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformation |
| title_short | Dynamic mechanical behavior, microstructure evolution, and restoration mechanism of a β‐Ti alloy during hot compression deformation |
| title_sort | dynamic mechanical behavior microstructure evolution and restoration mechanism of a β ti alloy during hot compression deformation |
| topic | metastable β titanium alloy dynamic mechanical behavior microstructure evolution restoration mechanism |
| url | https://doi.org/10.1002/msd2.12056 |
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