Material flow conditions for discontinuity free friction stir lap Al-to-Cu welding
- Chen Z.W. ,
- Parningotan D. ,
- Li W. ,
- et al
- Chen Z.W. ,
- Parningotan D. ,
- Li W. and
- Tarrant M.
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An experimental investigation was undertaken to examine how tool pin induced material flow and intermetallic growth conditions affect the formation of discontinuity during friction stir lap welding of dissimilar Al-Cu joints. The materials comprised a 6060-T5 aluminium alloy plate (thickness 6 mm) and a commercially pure copper sheet (thickness 3 mm). Both normal concave shoulder and scroll shoulder tools made using heat treated H13 tool steel were employed. Welding was performed at a travel speed of 40 mm/min and a tool rotational speed of 1400 or 710 rpm for normal and scroll shoulder tools, respectively. Joint microstructure and interface intermetallic layer growth were observed by optical microscopy and SEM. Conditions for discontinuity free Al-Cu welding are discussed.
11th International Symposium, 17-19 May 2016, Session 7B: Dissimilar, Paper 01
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