Figure 5

Optical microscopy photomicrographs of the weld zone of AA 6082 base alloys welded joints ER 4043 filler metal showing: (a) the weld zone reveals two types of defects they are solidification cracks (yellow arrows) and silicon segregation (red circles) and (b) the welded joints-heat affected zone interface at the root of AA 6082 base alloy welded joints using ER 4043 filler.