Microstructure and Conductivity of the Al-Cu Joint Processed by Friction Stir Welding

Table 2

EDS point analysis results of location in Figure 3.

Points	Al (at%)	Cu (at%)	Phase speculation
1	47.77	52.23	AlCu
2	66.50	33.50	Al2Cu
3	80.84	19.16	Al + IMC
4	49.14	50.86	AlCu
5	71.36	28.64	Al2Cu
6	63.84	36.16	Al2Cu
7	28.61	71.39	Al4Cu9