Fig. 5
Microstructure of vertical interface zone and schematic diagram of cross section (a) vertical interface; (b) SEM image at interface of AG/rivet shank; (c) enlarged SEM image of Al/Cu interface; (d) high-magnification SEM image of V layer; (e) EDS layered image of V layer; (f) phase distribution mapping; (g) grain orientation distribution; (h) schematic diagram of cross section; (j), (i) and (k) histograms of boundary misorientation distributions of Cu, Al2Cu and Al, respectively.
