Nanoindentation Hardness Distribution and Strain Field and Fracture Evolution in Dissimilar Friction Stir-Welded AA 6061-AA 5A06 Aluminum Alloy Joints

Figure 8

Optical macrograph of the side view of fracture surface and the corresponding strain field at the beginning of yielding for (a) Sample 1; (b) Sample 2; (c) Sample 3; (d) Sample 4; (e) Sample 5; (f) Sample 6.

(a)

(b)

(c)

(d)

(e)

(f)