Abstract: In this paper, the study on bonding technology of titanium alloy/composite material was carried out based on the background of bonding between titanium alloy trim and composite fan blades of aeroengine. The study focused on the bonding process parameters of titanium alloy/composite based on AF191 film, the bonding strength of composites with different structures/titanium alloys and the different surface treatment methods of titanium alloys/ composites. The results show that: Curing by autoclave, and removing the vacuum after pressurizing 0.1 MPa was more helpful for bonding. Composites with different structures have a greater impact on bonding strength, and composites with higher stiffness show better bonding strength. Pickling and anodizing the titanium alloy surface can greatly improve the bonding strength, and it is better to use with the surface pretreatment agent.

Key words: bonding, titanium alloy/composite, surface treatment, woven structure, laminated structure