Experimental methods for determining material flow in friction stir welds
- London B. ,
- Mahoney M. ,
- Bingel W. ,
- et al
- London B. ,
- Mahoney M. ,
- Bingel W. ,
- Calabrese M. and
- Waldron D.
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Experimental methods were developed to track material flow and mixing during the friction stir welding (FSW) process. Experiments were conducted with butt joints of 6.35 mm (0.25 in) thickness 7050-T7451 aluminium alloy plates. The FSW tool was H13 tool steel. Planar and discrete and continuous composite marking methodologies were developed to characterise the flow in the vicinity of the FSW pin. An Al-30 vol.%SiC composite was used as the marker. The Al-30 vol.%SiC material flowed readily under FSW conditions. The SiC markers could be observed in unetched metallographic sections. Material flowed from the advancing side, across the leading edge to the retreating side during FSW. Significant upward material flow was observed.
3rd International Symposium, 27-28 Sep 2001, Session 4: Aerospace Applications, Paper 04
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