Optimum processing for three-dimensional friction stir welding
- Tsujikawa M. ,
- Takahara H. ,
- Okawa Y. ,
- et al
- Tsujikawa M. ,
- Takahara H. ,
- Okawa Y. ,
- Taniguchi M. ,
- Oki S. and
- Higashi K.
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The tolerance of operational accuracy and optimum tool control in 3D friction stir welding (FSW) was investigated in relation to joint mechanical properties. A five-axis controlled FSW machine was developed for 3D welding. The material studied was a 5083-O aluminium alloy sheet (thickness 3 mm). FSW of 2D butt joints was studied using in-situ tool head swing, zero inclination tool angles and shortcut of the tool pass as tool control methods. 3D butt joints were then fabricated with tool inclination angle, welding speed and A-C axis shortcut control methods. Mechanical properties were characterised by tensile strength, Vickers hardness and ductility measurements. Welding direction change and tool head swing effects are discussed.
7th International Symposium, 20-22 May 2008, 3A: Process/Control 1, Paper 03
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