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材料导报  2024, Vol. 38 Issue (7): 22110267-5    https://doi.org/10.11896/cldb.22110267
  金属与金属基复合材料 |
CFRP/TC4激光连接工艺及接头组织和性能
龚浩1, 程东海1,*, 刘钊泽1, 李文杰1, 邹鹏远2
1 南昌航空大学航空制造工程学院,南昌 330063
2 南昌航空大学科技学院,江西 九江 332020
Study on Laser Bonding Technology and Microstructure and Properties of CFRP/TC4 Joint
GONG Hao1, CHENG Donghai1,*, LIU Zhaoze1, LI Wenjie1, ZOU Pengyuan2
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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摘要 针对碳纤维增强树脂基复合材料(CFRP)和TC4钛合金的激光焊接开展研究,分析了工艺参数对接头力学性能的影响,并进行接头断面分析;观察了接头微观结构及界面键合特征,分析了接头连接机理。结果表明:CFRP和TC4在激光的作用下能够获得良好的接头,在试验工艺范围内,当激光功率为650 W、焊接速度为10 mm/s时,接头剪切力最大值为926 N。接头通过TC4以及树脂的相互渗透能形成机械互锁效应,接头断裂模式主要为粘结断裂和内聚断裂,通过分析接头微观结构发现CFRP受热分解形成气泡,同时接头界面发生了元素扩散并在界面发生反应生成TiO2、CTi0.42V1.58组织,同时出现-OH键,从而构成稳定的接头组织。
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龚浩
程东海
刘钊泽
李文杰
邹鹏远
关键词:  CFRP  激光焊接  组织结构  机械互锁效应    
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.
Key words:  CFRP    laser welding    microstructures    mechanical interlocking effect
出版日期:  2024-04-10      发布日期:  2024-04-11
ZTFLH:  TG442  
基金资助: 江西省自然科学基金(S2021ZRMSL1064);南昌航空大学科技学院科技项目(KYKJ2102)
通讯作者:  程东海,南昌航空大学航空制造工程学院副教授、硕士研究生导师。2000年9月至2010年1月在北京科技大学获得材料成型及控制工程专业工学学士学位和材料加工工程专业工学博士学位。主持国家自然科学基金、航空基金、省教育厅基金、横向课题若干项,在国内外重要期刊发表学术论文60余篇。主要从事异种材料焊接、高能束焊接、钎焊等方向的研究工作。70269@nchu.edu.com   
作者简介:  龚浩,南昌航空大学航空制造工程学院硕士研究生,主要研究方向为异种金属材料焊接。
引用本文:    
龚浩, 程东海, 刘钊泽, 李文杰, 邹鹏远. CFRP/TC4激光连接工艺及接头组织和性能[J]. 材料导报, 2024, 38(7): 22110267-5.
GONG Hao, CHENG Donghai, LIU Zhaoze, LI Wenjie, ZOU Pengyuan. Study on Laser Bonding Technology and Microstructure and Properties of CFRP/TC4 Joint. Materials Reports, 2024, 38(7): 22110267-5.
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https://www.mater-rep.com/CN/10.11896/cldb.22110267  或          https://www.mater-rep.com/CN/Y2024/V38/I7/22110267
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