Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beam
In order to achieve high-quality welding of titanium copper dissimilar metals, the in-situ remelting welded joints of TC4 and T2 were obtained by using a time-sharing dual electron beam(TDEB). A welded joint consisting of the IMCs layer, FZ zone, copper weld zone, and titanium side HAZ is formed in...
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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/S2238785424025900 |
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| author | Jie Zhou Shun Guo Zehaochen Deng Yong Peng Qi Zhou Huning Bi Kailei Zhao Hongyi Xu Kehong Wang |
| author_facet | Jie Zhou Shun Guo Zehaochen Deng Yong Peng Qi Zhou Huning Bi Kailei Zhao Hongyi Xu Kehong Wang |
| author_sort | Jie Zhou |
| collection | DOAJ |
| description | In order to achieve high-quality welding of titanium copper dissimilar metals, the in-situ remelting welded joints of TC4 and T2 were obtained by using a time-sharing dual electron beam(TDEB). A welded joint consisting of the IMCs layer, FZ zone, copper weld zone, and titanium side HAZ is formed in the TC4/T2 interface area. The microstructure and morphology of IMCs layers in welded joints with TDEB welding and copper offset welding were observed by using SEM and TEM. Multiple forms of IMCs were observed in the IMCs layer, including columnar Ti2Cu, granular Ti3Cu4, and sheet-like TiCu4, clarifying the orientation relationship between some precipitates and matrix phases. The TC4/T2 joint welded with TDEB welding achieved micro zone remelting of the IMCs layer. The thickness of the IMCs layer has significantly decreased, and the number of copper-rich phases in the IMCs layer has increased, which improves the mechanical properties of the welded joint. The TC4/T2 joint welded by time-sharing dual beam electron beam has a tensile strength of 215.9 MPa and an elongation of 6.14%. The joint exhibits brittle quasi dissociation fracture. The main factor causing fracture is the high brittleness and hardness of titanium-rich phases such as TiCu and Ti2Cu. This study provide a new welding method for titanium copper dissimilar metals, as well as research ideas for dissimilar metal welding. |
| format | Article |
| id | doaj-art-e0362d2cf8814fe9b44cbac5aa9987d5 |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-e0362d2cf8814fe9b44cbac5aa9987d52025-08-20T02:39:09ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01336853686610.1016/j.jmrt.2024.11.062Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beamJie Zhou0Shun Guo1Zehaochen Deng2Yong Peng3Qi Zhou4Huning Bi5Kailei Zhao6Hongyi Xu7Kehong Wang8School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, China; Corresponding author. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.Special Environmental Material Science Research Institute, Harbin Institute of Technology, Shenzhen, 518055, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Key Laboratory of Controlled Arc Intelligent Additive Manufacturing Technology, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaIn order to achieve high-quality welding of titanium copper dissimilar metals, the in-situ remelting welded joints of TC4 and T2 were obtained by using a time-sharing dual electron beam(TDEB). A welded joint consisting of the IMCs layer, FZ zone, copper weld zone, and titanium side HAZ is formed in the TC4/T2 interface area. The microstructure and morphology of IMCs layers in welded joints with TDEB welding and copper offset welding were observed by using SEM and TEM. Multiple forms of IMCs were observed in the IMCs layer, including columnar Ti2Cu, granular Ti3Cu4, and sheet-like TiCu4, clarifying the orientation relationship between some precipitates and matrix phases. The TC4/T2 joint welded with TDEB welding achieved micro zone remelting of the IMCs layer. The thickness of the IMCs layer has significantly decreased, and the number of copper-rich phases in the IMCs layer has increased, which improves the mechanical properties of the welded joint. The TC4/T2 joint welded by time-sharing dual beam electron beam has a tensile strength of 215.9 MPa and an elongation of 6.14%. The joint exhibits brittle quasi dissociation fracture. The main factor causing fracture is the high brittleness and hardness of titanium-rich phases such as TiCu and Ti2Cu. This study provide a new welding method for titanium copper dissimilar metals, as well as research ideas for dissimilar metal welding.http://www.sciencedirect.com/science/article/pii/S2238785424025900Time-sharing dual electron beamIn-situ remelting weldingTitanium alloyPure copperTEMMechanical properties |
| spellingShingle | Jie Zhou Shun Guo Zehaochen Deng Yong Peng Qi Zhou Huning Bi Kailei Zhao Hongyi Xu Kehong Wang Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beam Journal of Materials Research and Technology Time-sharing dual electron beam In-situ remelting welding Titanium alloy Pure copper TEM Mechanical properties |
| title | Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beam |
| title_full | Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beam |
| title_fullStr | Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beam |
| title_full_unstemmed | Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beam |
| title_short | Microstructural features and mechanical properties of in-situ remelting welding of TC4 titanium alloy and T2 copper welded joint by electron beam |
| title_sort | microstructural features and mechanical properties of in situ remelting welding of tc4 titanium alloy and t2 copper welded joint by electron beam |
| topic | Time-sharing dual electron beam In-situ remelting welding Titanium alloy Pure copper TEM Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424025900 |
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