Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo Alloy
In this research, a repetitive bending and straightening process was carried out on the Ti–3Al–4Cr–Mo alloy for 20 passes. The changes in mechanical properties of the titanium alloy before and after repetitive bending and annealing were studied. The microstructure evolution and deformation mechanism...
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MDPI AG
2023-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/21/6873 |
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| author | Zhuoliang Li Yan Xu Jiang Qian Linhong Song |
| author_facet | Zhuoliang Li Yan Xu Jiang Qian Linhong Song |
| author_sort | Zhuoliang Li |
| collection | DOAJ |
| description | In this research, a repetitive bending and straightening process was carried out on the Ti–3Al–4Cr–Mo alloy for 20 passes. The changes in mechanical properties of the titanium alloy before and after repetitive bending and annealing were studied. The microstructure evolution and deformation mechanism were analyzed. The results show that after the repetitive bending and straightening process, the microstructure of the Ti–3Al–4Cr–Mo alloy is obviously refined, and, simultaneously, the yield strength is significantly improved. After annealing at 850 °C, the plastic ductility of the material was improved. The combined effects of grain refinement and dislocation behavior were the main reasons for the improvement in mechanical properties of the Ti–3Al–4Cr–Mo alloy. Twinning rarely occurred during plastic deformation of the Ti–3Al–4Cr–Mo alloy. The fine grains strongly inhibited the formation of twins. In addition, a small amount of α to β phase transformation was observed during the repetitive bending and straightening process of the material, which may have been induced by strain accumulation. |
| first_indexed | 2024-03-11T11:26:04Z |
| format | Article |
| id | doaj.art-30c0dcd50cc14802ab7a7f6e6d23ed46 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T11:26:04Z |
| publishDate | 2023-10-01 |
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| spelling | doaj.art-30c0dcd50cc14802ab7a7f6e6d23ed462023-11-10T15:07:11ZengMDPI AGMaterials1996-19442023-10-011621687310.3390/ma16216873Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo AlloyZhuoliang Li0Yan Xu1Jiang Qian2Linhong Song3HuiBo Heat Energy Engineering Technology Center, Shenyang Academy of Instrumentation Science Co., Ltd., Shenyang 110043, ChinaHuiBo Heat Energy Engineering Technology Center, Shenyang Academy of Instrumentation Science Co., Ltd., Shenyang 110043, ChinaHuiBo Heat Energy Engineering Technology Center, Shenyang Academy of Instrumentation Science Co., Ltd., Shenyang 110043, ChinaHuiBo Heat Energy Engineering Technology Center, Shenyang Academy of Instrumentation Science Co., Ltd., Shenyang 110043, ChinaIn this research, a repetitive bending and straightening process was carried out on the Ti–3Al–4Cr–Mo alloy for 20 passes. The changes in mechanical properties of the titanium alloy before and after repetitive bending and annealing were studied. The microstructure evolution and deformation mechanism were analyzed. The results show that after the repetitive bending and straightening process, the microstructure of the Ti–3Al–4Cr–Mo alloy is obviously refined, and, simultaneously, the yield strength is significantly improved. After annealing at 850 °C, the plastic ductility of the material was improved. The combined effects of grain refinement and dislocation behavior were the main reasons for the improvement in mechanical properties of the Ti–3Al–4Cr–Mo alloy. Twinning rarely occurred during plastic deformation of the Ti–3Al–4Cr–Mo alloy. The fine grains strongly inhibited the formation of twins. In addition, a small amount of α to β phase transformation was observed during the repetitive bending and straightening process of the material, which may have been induced by strain accumulation.https://www.mdpi.com/1996-1944/16/21/6873titanium alloyrepetitive bending and straighteningmechanical propertiesgrain refinementdislocation behavior |
| spellingShingle | Zhuoliang Li Yan Xu Jiang Qian Linhong Song Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo Alloy Materials titanium alloy repetitive bending and straightening mechanical properties grain refinement dislocation behavior |
| title | Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo Alloy |
| title_full | Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo Alloy |
| title_fullStr | Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo Alloy |
| title_full_unstemmed | Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo Alloy |
| title_short | Effect of Repetitive Bending and Straightening Process on Microstructure Properties and Deformation Mechanism of a Ti–Al–Cr–Mo Alloy |
| title_sort | effect of repetitive bending and straightening process on microstructure properties and deformation mechanism of a ti al cr mo alloy |
| topic | titanium alloy repetitive bending and straightening mechanical properties grain refinement dislocation behavior |
| url | https://www.mdpi.com/1996-1944/16/21/6873 |
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