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Comparative study on interface morphology and tensile property of CFRTP/Ti6Al4V laser joining joint under various groove dimensions
Journal of Polymer Engineering ( IF 2 ) Pub Date : 2021-07-01 , DOI: 10.1515/polyeng-2021-0005
Ying Xu 1 , Xiaohong Zhan 1 , Hongyan Yang 1 , Hengchang Bu 1 , Feiyun Wang 1
Affiliation  

Laser joining merges as a novel technique for the connection of carbon fiber reinforced thermoplastics composite (CFRTP) and metal. Besides, machining grooves on the metal surface presents a surface pre-treating method to enhance the strength of laser joining joint between CFRTP and metal. In this study, the laser joining of CFRTP and Ti6Al4V alloy is performed with different groove dimensions. The effect of groove dimension on interface morphology and failure load is analyzed. In addition, the formation mechanism of the interface and the fracture mode of the joint are further elucidated. The results indicate that the structurally sound connection and maximum failure load are attained with an appropriate groove dimension (groove width: 0.7 mm, groove depth: 0.25 mm, and aspect ratio: 0.36). At a narrower groove, the bubbles inside the resin caused by thermal decomposition of the matrix resin are obtained, while at a deeper groove, the gaps and holes are observed in the interface of the joint, both resulting in a lower failure load.

中文翻译:

不同凹槽尺寸下CFRTP/Ti6Al4V激光连接接头界面形貌及拉伸性能对比研究

激光连接融合为一种新技术,用于连接碳纤维增强热塑性塑料复合材料 (CFRTP) 和金属。此外,在金属表面加工凹槽提出了一种表面预处理方法,以提高CFRTP与金属之间的激光连接接头的强度。在这项研究中,CFRTP 和 Ti6Al4V 合金的激光连接是在不同的凹槽尺寸下进行的。分析了凹槽尺寸对界面形貌和破坏载荷的影响。此外,进一步阐明了界面的形成机制和接头的断裂方式。结果表明,在适当的凹槽尺寸(凹槽宽度:0.7 mm,凹槽深度:0.25 mm,纵横比:0.36)下获得结构良好的连接和最大破坏载荷。在较窄的凹槽处,
更新日期:2021-07-04
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