Grain and texture development in single crystal friction stir welds
- Fonda R.W. ,
- Wert J.A. ,
- Reynolds A.P. ,
- et al
- Fonda R.W. ,
- Wert J.A. ,
- Reynolds A.P. and
- Tang W.
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Description
Friction stir welding (FSW) experiments were performed on aluminium single crystals; the evolution of the grain structure and crystallographic texture from the parent material to the highly deformed region adjacent to the tool was studied, and the influence of conventional recrystallisation on the grain development process was clarified. Stir-in-plate FSW (welding speed 50 mm/min, tool rotation rate 800 rpm) was conducted on single crystal slabs inserted into panels of annealed AA-1050 plates. The welded joints were quenched in an attempt to preserve the microstructure surrounding the tool and analysed by electron backscatter diffraction. Issues discussed include grain boundary production by the rotational deformation field generated by FSW and large grains within the deformed microstructure.
6th International Symposium, 10-13 Oct 2006, Session 10B: Metallurgy I, Paper 03
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