Effect of Friction Stir Processing on Gas Tungsten Arc-Welded and Friction Stir-Welded 5083-H111 Aluminium Alloy Joints

Figure 7

Optical micrographs of the TMAZ and HAZ regions at 50 μm scale (objective 20x): (a) unprocessed GTAWed joint, (b) friction stir-processed GTAWd joint, (c) unprocessed FSWed joint, and (d) friction stir-processed FSWed joint.

(a)

(b)

(c)

(d)