Towards an understanding of joining mechanisms of dissimilar friction stir welds
- Krutzlinger M. ,
- Butzhammer A. ,
- Zaeh M.F. ,
- et al
- Krutzlinger M. ,
- Butzhammer A. ,
- Zaeh M.F. ,
- Marstatt R. and
- Haider F.
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A thermal model with a thermo pseudo mechanical (TPM) heat source was employed to investigate the influence of process parameters (rotational speed, feed rate and tool geometry) on the temperature profile at the interface of dissimilar metal lap joints (AW 1050 aluminium to titanium grade 1 or copper) during friction stir welding. Experiments were performed on a Heller MCH250-type CNC milling machine in the position controlled mode at a tilt angle of 2 deg., rotational speeds of 1800-2800 rpm and feed rates of 100-500 mm/min. Temperatures were monitored by thermocouples. The TPM model was implemented in COMSOL "Multiphysics". Temperature time dependencies were used to estimate the thickness of the diffusion (intermetallic compound) layer, which was compared with STEM images of the joint interface.
11th International Symposium, 17-19 May 2016, Session 5B: Modelling II, Paper 02
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