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Lap joints between 2 mm aluminium alloy sheet in 2024-T3 (Al, 4.4%Cu, 1.5%Mg, 0.6%Mn) and 7075-T6 (Al, 1.6%Cu, 2.5%Mg, 0.23%Cr, 5.6%Zn) were prepared and evaluated. The welds were produced using a range of welding and tool speeds, with a non-threaded tool, and one or two runs (second run with tool rotation reversed). The joints were assessed by optical microscopy and measurement of shear strength.

2nd International Symposium, 26-28 Jun 2000, Session 1, Paper 03