Sequential Process of Diffusion Bonding and Annealing on Dissimilar Welding of Mg/Al Alloys

Figure 3

SEM micrograph of the welded specimen: (a) without annealing; (b) annealed at 200°C; (c) annealed at 250°C; (d) annealed at 300°C.

(a)

(b)

(c)

(d)