Tool-workpiece interface and shear layer formed during friction stir welding
- Chen Z.W. ,
- Pasang T. ,
- Qi Y. ,
- et al
- Chen Z.W. ,
- Pasang T. ,
- Qi Y. and
- Perris R.
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Description
To better understand the heat generation, temperature distribution and material flow during friction stir welding (FSW), experiments, including some with a pin breaking technique, were undertaken on two aluminium alloys (5083-O (Al, 4.5%Mg) rolled plates and as-cast A356 (Al, 7%Si)), and the tool-workpiece interface region was examined by metallography. FSW tools (with left hand-thread pins) were machined from H13 tool steel. To facilitate breaking, some pins were machined with a sharp shoulder-pin corner. Temperature measurements were performed by placement of K-type thermocouples in holes (1 mm diameter) in the weld plates. Results showing the shear layer and flow around the tool pin are presented, and the occurrence of interface sliding and sticking conditions is considered.
6th International Symposium, 10-13 Oct 2006, Session 14A: Modelling III, Paper 02
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