Therefore, a sample holder that is suitable for test samples dimension
as well as overlapping welding position was designed and manufactured
(Fig. 1). For the joining 4, 7, 9 kA peak currents were applied while the
other welding parameters were kept constant as given in Table 2.
Schematic diagram of the resistance spot weld processes are shown in
Fig. 2.
Macrograph of the resistance spot welded materials is shown in
Fig. 3.