Process window optimization for FSW of thin and thick sheet Al alloys using statistical methods
- Dubourg L. ,
- Gagnon F.O. ,
- Nadeau F. ,
- et al
- Dubourg L. ,
- Gagnon F.O. ,
- Nadeau F. ,
- St-Georges L. and
- Jahazi M.
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Friction stir welding (FSW) studies were undertaken to join sheet and plate specimens of aluminium alloys in a butt joint configuration, and design of experiments methods were employed to optimise process parameters with respect to weldment quality and tensile properties. The specimens comprised AA-7075-T6 sheets (thickness 2 mm) and AA-6061-T6 plates (thickness 8 mm). The influence of seven FSW parameters (welding speed, rotational speed, feed rate, forge position, roll angle, pin clearance and pin axis position) on weld quality was investigated. Welded joints were characterised by optical microscopy and measurements of yield strength and ultimate tensile strength. A combination of Taguchi and EM statistical methods was used to optimise parameters and minimise the number of tests.
6th International Symposium, 10-13 Oct 2006, Session 8A: Quality II, Paper 02
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