The effect of tool geometry on the microstructure and crystallographic texture of thick section friction stir welded aluminium
- Ahmed M.M.Z. ,
- Wynne B.P. ,
- Rainforth W.M. ,
- et al
- Ahmed M.M.Z. ,
- Wynne B.P. ,
- Rainforth W.M. ,
- Addison A. ,
- Martin J.P. and
- Threadgill P.L.
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Description
Tapered probe and parallel probe tools were employed in friction stir welding of thick section AA 6082-T6 aluminium alloy specimens (thickness 38 mm) and the effect of tool geometry on weldment microstructure and crystallographic texture was investigated. Welding was performed at a rotational speed of 400 rpm and a traverse speed of 125 mm/min. Microstructure was observed by optical microscopy while the grain structure and crystallographic texture in the nugget region were examined by high resolution and very long low resolution electron back scattering diffraction. Vickers hardness was measured under a 5 kg load in order to construct a hardness map to correlate with microstructure observations.
10th International Symposium, 20-22 May 2014, Session 10A: Microstructure and Properties, Paper 01
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