Microstructures and Mechanical Properties of Al/Fe and Cu/Fe Joints by Continuous Drive Friction Welding

Table 2

Composition analyses of the points indicated in Figure 4 (at.%).

Test positions	Al	Fe	Cu	O	Possible phase
01	73.78	24.02	—	2.20	Al3Fe
02	75.67	23.58	—	0.75	Al3Fe
03	—	99.94	—	0.06	Fe matrix
04	—	72.21	25.34	2.45	Solid solution
05	—	20.13	78.27	1.60	FeCu4