Mechanical Properties and Electrical Resistivity of the Friction Stir Spot-Welded Dissimilar Al–Cu Joints

Table 3

Electrical resistivities of the base metals and the spot welds of various process parameters (TRS: tool rotational speed; PD: plunge depth).

Material	Resistivity (μΩ)
Base metal, Al	0.018
Base metal, Cu	0.026
Average value	0.022
Spot welds	Resistivity (μΩ)
TRS: 800 rpm; PD: 0.5 mm	0.061
TRS: 800 rpm; PD: 1 mm	0.038
TRS: 1000 rpm; PD: 0.5 mm	0.047
TRS: 1000 rpm; PD: 1 mm	0.032
TRS: 1200 rpm; PD: 0.5 mm	0.036
TRS: 1200 rpm; PD: 1 mm	0.030
TRS: 1400 rpm; PD: 0.5 mm	0.029
TRS: 1400 rpm; PD: 1 mm	0.024