Frank Balle, Stefan Huxhold, Stefan Emrich, Guntram Wagner, Michael Kopnarski and Dietmar Eifler Influence of Heat Treatments on the Mechanical Properties of Ultrasonic Welded AA 2024/CF-PA66-Joints Advanced Engineering Materials 15
The influence of different heat treatments on mechanical properties and microstructure of ultrasonic welded AA 2024/CF-PA66-joints have been studied. A distinction was made between pre-weld and post-weld heat treatments. As a beneficial result a significant higher tensile strength of up to 113 MPa is observed for hybrid Al/CF-PA66 joints and solution annealed AA 2024 sheets which can be attributed to the specific oxide morphology with mechanical interlocking of polymer and aluminum, even on a sub-µm-scale.
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