Influence of the interlayer film thickness on the mechanical performance of AA2024-T3/CF-PPS hybrid joints produced by friction spot joining

被引：8

作者：

André N.M. ^{[1
]}

Goushegir S.M. ^{[2
]}

dos Santos J.F. ^{[2
]}

Canto L.B. ^{[1
]}

Amancio-Filho S.T. ^{[2
,3
]}

机构：

[1] Postgraduate Programme in Materials Science and Engineering–PPG-CEM, São Carlos Federal University–UFSCar, São Carlos

[2] Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute of Materials Research, Materials Mechanics, Solid State Joining Processes, Geesthacht

[3] Institute of Polymer Composites, Hamburg University of Technology, Hamburg

来源：

| 2018年 / Taylor and Francis Ltd.卷 / 32期

基金：

巴西圣保罗研究基金会;

关键词：

film interlayer; Friction spot joining; hybrid structures; mechanical strength;

D O I：

10.1080/09507116.2017.1347319

中图分类号：

学科分类号：

摘要：

Friction Spot Joining (FSpJ) is an innovative friction-based joining technique for metal-polymer hybrid structures. Friction spot joints of aluminium alloy 2024-T3 and carbon fibre-reinforced poly(phenylene sulphide) 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 favours the wettability of the parts’ surfaces. Microstructural analyses proved that the metallic nub formation and the interdiffusion of PPS chains between film and composite matrix are also favoured 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. © 2017 Informa UK Limited, trading as Taylor & Francis Group.

引用

页码：1 / 10

页数：9

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