Research on Friction Stir Spot Welding Brazing Process and Properties of Dissimilar Metals DP590 and 6061

Table 1

Chemical composition of materials (mass fraction, %).

Category	C	Mn	Si	Mg	Zn	Cu	Al	Fe
DP590	0.035	0.174	0.045	—	—	0.006	0.04	Margin
6061	—	0.15	0.4–0.8	0.8–1.2	0.25	0.15–0.40	Margin	0.7
Al-Zn solder	—	—	—	—	88	—	12	—