Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld Seam
The influence of loading direction and weld reinforcement on fatigue performance of TC2 titanium alloy TIG weld seam was investigated <i>via</i> fatigue experiments and SEM fracture observation. The results show that the fatigue life of retaining weld reinforcement specimens is lower tha...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2018-02-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I2/122 |
| _version_ | 1797967288517787648 |
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| author | HUI Li LIU Si-qi ZHOU Song WANG Lei MA Chuang ZHAO Qiang |
| author_facet | HUI Li LIU Si-qi ZHOU Song WANG Lei MA Chuang ZHAO Qiang |
| author_sort | HUI Li |
| collection | DOAJ |
| description | The influence of loading direction and weld reinforcement on fatigue performance of TC2 titanium alloy TIG weld seam was investigated <i>via</i> fatigue experiments and SEM fracture observation. The results show that the fatigue life of retaining weld reinforcement specimens is lower than that of removing one in the same weld direction. The fatigue life of oblique weld specimens is higher than that of straight one with the same weld reinforcement treatment. The initiation of removing weld reinforcement specimens' fatigue crack sources is in the hole defect, but the weld reinforcement specimen initiate at the weld toes. During the early stage of fatigue crack propagation, the cracks all grow inside the weld seam metal with obvious fatigue striation. And the fatigue cracks of oblique weld specimens pass through the weld seam into the base with a typical toughness fatigue striation during the last stage of fatigue crack propagation. The dimple of straight weld specimens is little and shallow in the final fracture zone. The oblique weld specimens broke in the base metal area, and the dimple is dense. |
| first_indexed | 2024-04-11T02:28:53Z |
| format | Article |
| id | doaj.art-2de530126c684c358e219d7f13792183 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:28:53Z |
| publishDate | 2018-02-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-2de530126c684c358e219d7f137921832023-01-02T21:47:20ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812018-02-0146212212710.11868/j.issn.1001-4381.2016.001177201802001177Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld SeamHUI Li0LIU Si-qi1ZHOU Song2WANG Lei3MA Chuang4ZHAO Qiang5Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, ChinaKey Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, ChinaKey Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, ChinaKey Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, ChinaKey Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, ChinaShenyang Liming Aero-engine Group Co., Ltd., Shenyang 110043, ChinaThe influence of loading direction and weld reinforcement on fatigue performance of TC2 titanium alloy TIG weld seam was investigated <i>via</i> fatigue experiments and SEM fracture observation. The results show that the fatigue life of retaining weld reinforcement specimens is lower than that of removing one in the same weld direction. The fatigue life of oblique weld specimens is higher than that of straight one with the same weld reinforcement treatment. The initiation of removing weld reinforcement specimens' fatigue crack sources is in the hole defect, but the weld reinforcement specimen initiate at the weld toes. During the early stage of fatigue crack propagation, the cracks all grow inside the weld seam metal with obvious fatigue striation. And the fatigue cracks of oblique weld specimens pass through the weld seam into the base with a typical toughness fatigue striation during the last stage of fatigue crack propagation. The dimple of straight weld specimens is little and shallow in the final fracture zone. The oblique weld specimens broke in the base metal area, and the dimple is dense.http://jme.biam.ac.cn/CN/Y2018/V46/I2/122TC2 titanium alloyTIG straight/oblique weld seamweld reinforcementfatigue life |
| spellingShingle | HUI Li LIU Si-qi ZHOU Song WANG Lei MA Chuang ZHAO Qiang Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld Seam Cailiao gongcheng TC2 titanium alloy TIG straight/oblique weld seam weld reinforcement fatigue life |
| title | Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld Seam |
| title_full | Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld Seam |
| title_fullStr | Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld Seam |
| title_full_unstemmed | Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld Seam |
| title_short | Influence of Loading Direction and Weld Reinforcement on Fatigue Performance of TIG Weld Seam |
| title_sort | influence of loading direction and weld reinforcement on fatigue performance of tig weld seam |
| topic | TC2 titanium alloy TIG straight/oblique weld seam weld reinforcement fatigue life |
| url | http://jme.biam.ac.cn/CN/Y2018/V46/I2/122 |
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