From: Refill Friction Stir Spot Welding Al Alloy to Copper via Pure Metallurgical Joining Mechanism
Location
Al
Cu
Total
1
2.8
97.2
100.0
2
22.4
77.6
3
33.0
67.0
4
49.0
51.0
5
63.5
36.5
6
56.9
43.1