Friction Spot Joining of aluminum alloy 2024-T3 and carbon-fiber-reinforced poly(phenylene sulfide) laminate with additional PPS film interlayer: Microstructure, mechanical strength and failure mechanisms

Journal
Composites Part B: Engineering  
Volume
94
Start Page
197
End Page
208
Citation
Composites Part B: Engineering (94): 197-208 (2016-06-01)
Publisher DOI
10.1016/j.compositesb.2016.03.011
Scopus ID
2-s2.0-84964005004
Friction Spot Joining is an innovative friction-based joining technique for metal-polymer hybrid structures. In this work, aluminum alloy 2024-T3 and CF-PPS friction-spot joints were produced with additional PPS film interlayer. The joints were investigated in terms of the microstructure, mechanical performance under quasi-static loading and failure mechanisms. Macro- and micro-mechanical interlocking as well as adhesion forces were identified to dictate bonding mechanisms in the FSp joint with film interlayer. The ultimate lap shear force of the joints (2700 ± 115 N up to 3070 ± 165 N) were 20%-55% higher than the corresponding joints without interlayer, due to the larger bonding area, better load distribution and improved micro-mechanical interlocking. The failure analysis of the joints revealed a mixture of adhesive-cohesive failure, whereas cohesive failure was dominant.
Subjects
A. Polymer-matrix composites (PMCs)
B. Mechanical properties
B. Microstructure
E. Joints/joining
Friction Spot Joining