| METALS AND METAL MATRIX COMPOSITES |
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| Study on Laser Bonding Technology and Microstructure and Properties of CFRP/TC4 Joint |
| GONG Hao1, CHENG Donghai1,*, LIU Zhaoze1, LI Wenjie1, ZOU Pengyuan2
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1 College of Aeronautical Manufacturing Engineering, Nanchang Aviation University, Nanchang 330063, China
2 College of Science and Technology, Nanchang Aviation University, Jiujiang 332020, Jiangxi, China |
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Abstract Laser welding of carbon fiber reinforced polymer composite (CFRP) and TC4 titanium alloy was studied. The influence of technological parameters on the mechanical properties of the joint was analyzed, and the cross section of the joint was analyzed. The microstructure and interface bonding characteristics of the joint were observed, and the joint mechanism was analyzed. The results showed that, under the action of laser, the joint of CFRP and TC4 was formed. Within a certain range of technological parameters, when the laser power is 650 W and the welding speed is 10 mm/s, the joint shear force is up to 926 N. The joint can form mechanical interlocking effect through mutual penetration of TC4 and resin. The fracture modes of the joint are mainly bond fracture and cohesive fracture. By analyzing the microstructure of the joint, it is found that the CFRP material is decomposed by heat and form bubbles. At the same time, the element diffusion occurs at the interface of the joint and the reaction occurs when the TiO2, CTi0.42V1.58 and -OH bond are formed, and a stable joint structure is formed.
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Published: 10 April 2024
Online: 2024-04-11
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| Fund:Natural Science Foundation of Jiangxi Province, China (S2021ZRMSL1064) and Science and Technology Project of College of Science and Technology of Nanchang Aviation University (KYKJ2102). |
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2024, Vol. 38 
