Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging
There are many problems in the arc welding repair of aluminum alloy parts, such as excessive pores, coarse grains, and low hardness. Introducing external energy excitation is an effective solution. In this paper, 7075 aluminum alloy parts are repaired using the arc welding - laser shock forging tech...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023099991 |
| _version_ | 1827577502565924864 |
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| author | Zhichao Chen Yongkang Zhang Yuanqing Chi Junfeng Gou Chaohui Lin Yuqi Lin |
| author_facet | Zhichao Chen Yongkang Zhang Yuanqing Chi Junfeng Gou Chaohui Lin Yuqi Lin |
| author_sort | Zhichao Chen |
| collection | DOAJ |
| description | There are many problems in the arc welding repair of aluminum alloy parts, such as excessive pores, coarse grains, and low hardness. Introducing external energy excitation is an effective solution. In this paper, 7075 aluminum alloy parts are repaired using the arc welding - laser shock forging technique. The effects of laser-wire spacing, laser pulse energy and frequency, welding current and speed, and V-groove depth on the surface morphology, section geometric characteristics, and porosity of the repaired layer are studied. Additionally, the hardness and microstructure of the repaired layer formed by arc welding - laser shock forging and arc welding are compared. The results show that a fine surface morphology of the repaired layer can be achieved by selecting reasonable laser-wire spacing, welding current, welding speed, and V-groove depth. It is also advised to select the maximum laser pulse energy and frequency possible, in order to increase the aspect ratio, reduce the residual coefficient, minimize porosity, and decrease the maximum pore diameter of the repaired layer. When compared to arc welding alone, arc welding - laser shock forging has the advantage of reducing grain size and improving the hardness of the repaired layer. |
| first_indexed | 2024-03-08T21:28:41Z |
| format | Article |
| id | doaj.art-f46d32d537c642a598dd9f9e5b33564f |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-08T21:28:41Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-f46d32d537c642a598dd9f9e5b33564f2023-12-21T07:34:39ZengElsevierHeliyon2405-84402023-12-01912e22791Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forgingZhichao Chen0Yongkang Zhang1Yuanqing Chi2Junfeng Gou3Chaohui Lin4Yuqi Lin5Guangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment, Guangdong University of Technology, Guangzhou, 510006, PR China; School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China; School of Intelligent Engineering, Shaoguan University, Shaoguan, 512005, PR ChinaGuangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment, Guangdong University of Technology, Guangzhou, 510006, PR China; School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China; Corresponding author. Guangdong University of Technology, Panyu Zone, Guangzhou, Guangdong, 510006, PR China.Guangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment, Guangdong University of Technology, Guangzhou, 510006, PR China; School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, PR ChinaGuangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment, Guangdong University of Technology, Guangzhou, 510006, PR China; School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, PR ChinaGuangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment, Guangdong University of Technology, Guangzhou, 510006, PR China; School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, PR ChinaSchool of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, PR ChinaThere are many problems in the arc welding repair of aluminum alloy parts, such as excessive pores, coarse grains, and low hardness. Introducing external energy excitation is an effective solution. In this paper, 7075 aluminum alloy parts are repaired using the arc welding - laser shock forging technique. The effects of laser-wire spacing, laser pulse energy and frequency, welding current and speed, and V-groove depth on the surface morphology, section geometric characteristics, and porosity of the repaired layer are studied. Additionally, the hardness and microstructure of the repaired layer formed by arc welding - laser shock forging and arc welding are compared. The results show that a fine surface morphology of the repaired layer can be achieved by selecting reasonable laser-wire spacing, welding current, welding speed, and V-groove depth. It is also advised to select the maximum laser pulse energy and frequency possible, in order to increase the aspect ratio, reduce the residual coefficient, minimize porosity, and decrease the maximum pore diameter of the repaired layer. When compared to arc welding alone, arc welding - laser shock forging has the advantage of reducing grain size and improving the hardness of the repaired layer.http://www.sciencedirect.com/science/article/pii/S2405844023099991Repair and remanufactureArc welding - laser shock forgingHigh-strength aluminum alloyPorosityHardness |
| spellingShingle | Zhichao Chen Yongkang Zhang Yuanqing Chi Junfeng Gou Chaohui Lin Yuqi Lin Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging Heliyon Repair and remanufacture Arc welding - laser shock forging High-strength aluminum alloy Porosity Hardness |
| title | Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging |
| title_full | Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging |
| title_fullStr | Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging |
| title_full_unstemmed | Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging |
| title_short | Research on morphology, porosity, mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging |
| title_sort | research on morphology porosity mechanical properties of 7075 aluminum alloy repaired by arc welding and laser shock forging |
| topic | Repair and remanufacture Arc welding - laser shock forging High-strength aluminum alloy Porosity Hardness |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023099991 |
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