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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of the Interlayer Film Thickness on the Mechanical Performance of AA2024-T3/CF-PPS Hybrid Joints Produced by Friction Spot Joining

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Author(s):
Natália M. André [1] ; Seyed M. Goushegir [2] ; Jorge F. dos Santos [3] ; Leonardo B. Canto [4] ; Sergio T. Amancio-Filho
Total Authors: 5
Affiliation:
[1] Universidade Federal de São Carlos. Programa de Pós-graduação em Ciência e Engenharia de Materiais - Brasil
[2] Helmholtz-Zentrum Geesthacht. Centre for Materials and Coastal Research - Alemanha
[3] Helmholtz-Zentrum Geesthacht. Centre for Materials and Coastal Research - Alemanha
[4] Universidade Federal de São Carlos. Programa de Pós-graduação em Ciência e Engenharia de Materiais - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Soldagem & Inspeção; v. 21, n. 1, p. 2-15, 2016-03-00.
Abstract

Abstract Friction Spot Joining (FSpJ) is an innovative friction-based joining technique for metal-polymer hybrid structures. Friction spot joints of aluminum alloy 2024-T3 and carbon-fiber reinforced poly(phenylene sulfide) composite laminate (CF-PPS) were produced with an additional PPS film interlayer. Two different film thicknesses were investigated in this study: 100 and 500 µm. Lap shear testing demonstrated that the joints produced with 100 µm film (2093 ± 180 N) were stronger than the joints with 500 µm (708 ± 69 N). Additionally, the fracture surface analysis revealed a larger bonding area for the joints with 100 µm film (53 ± 2 mm2) as compared to the joints with 500 µm film (40 ± 1 mm2). Considering the low thermal conductivity of PPS, the thinnest film is more likely to soften by the frictional heat during the joining process. Hence, the low viscosity of the molten PPS favors the wettability of the parts’ surface. Microstructural analyses proved that the metallic nub formation and the interdiffusion of PPS chains between film and composite matrix are also favored for thinner film use. Thus, superior adhesion between the partners is achieved. Therefore, it was concluded that the addition of the thinnest film interlayer leads to stronger joints. (AU)

FAPESP's process: 14/09271-0 - Friction Spot Joining of carbon fiber reinforced PPS and AA2024-T3 with PPS film interlayer
Grantee:Natália Manente André
Support Opportunities: Scholarships in Brazil - Master