CFRP/金属异种材料激光连接工艺的研究现状

A REVIEW: Prospect on Laser Direct Joining of CFRP with Metal

摘要:

树脂基碳纤维增强复合材料（CFRP）作为新型轻质结构复合材料，广泛应用于航空航天器件的零部件中。CFRP与航空常用金属传统连接主要有胶接和机械连接，但具有一定的局限性。激光连接技术具有能量密度高，可控性好等特点，可用于复合材料和金属的连接。本文针对当前树脂基CFRP与金属（铝合金、钛合金、钢等）激光连接接头成形机理以及接头缺陷进行了综述，同时分析了焊接工艺、组织结构优化以及焊前金属表面处理对接头成形的调控，并对CFRP/金属激光连接的发展趋势提出了展望。

Abstract:

Resin based Carbon fiber reinforced plastics (CFRP), as the cutting-edge light-weight composite material, are widely used in the aerospace parts. The main technologies to bond CFRPs and metals are namely adhesive bonding and mechanical bonding, which includes limitation in some area . However, laser welding technology possesses the advantages of low heat input and small deformation after welding, therefore, it can be applied to the bonding of composites and metals. This paper reviewed the bonding mechanisms and the joint defects of the joints between the CFRP materials and the common used metal like aluminum alloys, titanium alloys and carbon steels by laser welding process, and analyzed the effect of welding process, structural optimal and pre-surface treatment on the property of joint, Finally, the prospect of the CFRP/metal joint formed by laser welding are presented in this paper.