Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole welding
Welding problems have restricted the applications of lightweight SiCp/Al composites in aerospace. In this work, the controllability of the keyhole mode, nucleation mechanism, and mechanical properties of the laser-welding process are studied in detail. The extrusion effect formed by the open keyhole...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423020537 |
| _version_ | 1797646690547662848 |
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| author | Mingyang Zhang Chunming Wang Zhijia Hua Yiyang Hu Qiubao Ouyang Gaoyang Mi |
| author_facet | Mingyang Zhang Chunming Wang Zhijia Hua Yiyang Hu Qiubao Ouyang Gaoyang Mi |
| author_sort | Mingyang Zhang |
| collection | DOAJ |
| description | Welding problems have restricted the applications of lightweight SiCp/Al composites in aerospace. In this work, the controllability of the keyhole mode, nucleation mechanism, and mechanical properties of the laser-welding process are studied in detail. The extrusion effect formed by the open keyhole pushes SiC particles to the bottom of the molten pool. To observe the nucleation and growth mechanism of the Al4C3 of keyhole laser-welded SiC/2A14Al composites, the dissolution–precipitation behavior of the SiC particles and growth behavior of the Al4C3 tip were observed. Owing to its high chemical properties, Al4C3 mainly begins nucleating from the open edges of the SiC particles and its formation is mainly distributed along the direction of Al grains. Al4C3 was the main crack source and propagation path while the small-sized SiC particles hindered the crack propagation. This work innovatively regulates the keyhole mode to achieve ‘small damage breakdown’ laser welding, greatly reducing the volume fraction of Al4C3. It also provides new insight into fusion welding of SiC particle-reinforced Al matrix composites. |
| first_indexed | 2024-03-11T15:06:20Z |
| format | Article |
| id | doaj.art-ed4b6c7d54f848468e39f1164be0598f |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:06:20Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-ed4b6c7d54f848468e39f1164be0598f2023-10-30T06:03:57ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012657315747Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole weldingMingyang Zhang0Chunming Wang1Zhijia Hua2Yiyang Hu3Qiubao Ouyang4Gaoyang Mi5School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaState Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, ChinaSchool of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Guangdong Intelligent Robotics Institute, Guangdong, China; Corresponding author. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.Welding problems have restricted the applications of lightweight SiCp/Al composites in aerospace. In this work, the controllability of the keyhole mode, nucleation mechanism, and mechanical properties of the laser-welding process are studied in detail. The extrusion effect formed by the open keyhole pushes SiC particles to the bottom of the molten pool. To observe the nucleation and growth mechanism of the Al4C3 of keyhole laser-welded SiC/2A14Al composites, the dissolution–precipitation behavior of the SiC particles and growth behavior of the Al4C3 tip were observed. Owing to its high chemical properties, Al4C3 mainly begins nucleating from the open edges of the SiC particles and its formation is mainly distributed along the direction of Al grains. Al4C3 was the main crack source and propagation path while the small-sized SiC particles hindered the crack propagation. This work innovatively regulates the keyhole mode to achieve ‘small damage breakdown’ laser welding, greatly reducing the volume fraction of Al4C3. It also provides new insight into fusion welding of SiC particle-reinforced Al matrix composites.http://www.sciencedirect.com/science/article/pii/S2238785423020537Laser keyhole weldingSiCp/Al compositesMicrostructureNucleation and growth mechanismsTEMMechanical properties |
| spellingShingle | Mingyang Zhang Chunming Wang Zhijia Hua Yiyang Hu Qiubao Ouyang Gaoyang Mi Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole welding Journal of Materials Research and Technology Laser keyhole welding SiCp/Al composites Microstructure Nucleation and growth mechanisms TEM Mechanical properties |
| title | Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole welding |
| title_full | Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole welding |
| title_fullStr | Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole welding |
| title_full_unstemmed | Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole welding |
| title_short | Microstructure evolution, interface and mechanical properties of SiCp/2A14 joint during laser keyhole welding |
| title_sort | microstructure evolution interface and mechanical properties of sicp 2a14 joint during laser keyhole welding |
| topic | Laser keyhole welding SiCp/Al composites Microstructure Nucleation and growth mechanisms TEM Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423020537 |
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