Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steel
Aiming at the demand for fatigue life improvement of 45CrNiMoVA ultra-high strength steel shaft parts, a pre-torsion strengthening process using a combination of two different angles before and after was proposed based on the mechanisms of strain hardening, fine grain strengthening and dislocation s...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424023573 |
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| author | Xuezhi Li Zhiqiang Liang Zekun Li Zhihai Cai Yuchao Du HongTao Chen Tianyang Qiu Lijing Xie Xibin Wang Peng Zhang Guoqiang Liu |
| author_facet | Xuezhi Li Zhiqiang Liang Zekun Li Zhihai Cai Yuchao Du HongTao Chen Tianyang Qiu Lijing Xie Xibin Wang Peng Zhang Guoqiang Liu |
| author_sort | Xuezhi Li |
| collection | DOAJ |
| description | Aiming at the demand for fatigue life improvement of 45CrNiMoVA ultra-high strength steel shaft parts, a pre-torsion strengthening process using a combination of two different angles before and after was proposed based on the mechanisms of strain hardening, fine grain strengthening and dislocation strengthening. Through surface integrity measurement, torsional fatigue test and fatigue fracture characterization of the specimens, the main surface integrity factors affecting the fatigue life of the pre-torsion strengthening were analyzed. The results indicated that the grain size was refined and the plastic deformation was increased by the two-angle pre-torsion strengthening compared with the single-angle pre-torsion strengthening. The obtained surface residual compressive stress σx was the main factor affecting the fatigue life of pre-torsion strengthening, and the change in pre-torsion angle results in a significant secondary strengthening layer in the subsurface layer of the material. In summary, the study of the pre-torsion strengthening process with different combinations of angles has a guiding significance for improving the fatigue life of ultra-high strength steel. |
| format | Article |
| id | doaj-art-2f9047ce996044b7addc253e2002aed2 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-2f9047ce996044b7addc253e2002aed22025-08-20T02:35:29ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01333837385110.1016/j.jmrt.2024.10.087Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steelXuezhi Li0Zhiqiang Liang1Zekun Li2Zhihai Cai3Yuchao Du4HongTao Chen5Tianyang Qiu6Lijing Xie7Xibin Wang8Peng Zhang9Guoqiang Liu10School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; Corresponding author.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaNational Engineering Research Center for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; Zhengzhou Academy of Intelligent Technology, Beijing Institute of Technology, Zhengzhou 450000, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, ChinaInstitute of Process Research, Inner Mongolia First Machinery Group Co., Ltd, Baotou 014030, ChinaInstitute of Process Research, Inner Mongolia First Machinery Group Co., Ltd, Baotou 014030, ChinaAiming at the demand for fatigue life improvement of 45CrNiMoVA ultra-high strength steel shaft parts, a pre-torsion strengthening process using a combination of two different angles before and after was proposed based on the mechanisms of strain hardening, fine grain strengthening and dislocation strengthening. Through surface integrity measurement, torsional fatigue test and fatigue fracture characterization of the specimens, the main surface integrity factors affecting the fatigue life of the pre-torsion strengthening were analyzed. The results indicated that the grain size was refined and the plastic deformation was increased by the two-angle pre-torsion strengthening compared with the single-angle pre-torsion strengthening. The obtained surface residual compressive stress σx was the main factor affecting the fatigue life of pre-torsion strengthening, and the change in pre-torsion angle results in a significant secondary strengthening layer in the subsurface layer of the material. In summary, the study of the pre-torsion strengthening process with different combinations of angles has a guiding significance for improving the fatigue life of ultra-high strength steel.http://www.sciencedirect.com/science/article/pii/S2238785424023573Ultra-high strength steelPre-torsionFatigue propertiesSurface integrityFracture orientation |
| spellingShingle | Xuezhi Li Zhiqiang Liang Zekun Li Zhihai Cai Yuchao Du HongTao Chen Tianyang Qiu Lijing Xie Xibin Wang Peng Zhang Guoqiang Liu Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steel Journal of Materials Research and Technology Ultra-high strength steel Pre-torsion Fatigue properties Surface integrity Fracture orientation |
| title | Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steel |
| title_full | Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steel |
| title_fullStr | Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steel |
| title_full_unstemmed | Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steel |
| title_short | Influence of pre-torsion strengthening on the fatigue properties of 45 CrNiMoVA ultra-high strength steel |
| title_sort | influence of pre torsion strengthening on the fatigue properties of 45 crnimova ultra high strength steel |
| topic | Ultra-high strength steel Pre-torsion Fatigue properties Surface integrity Fracture orientation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424023573 |
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