Microhardness was
also taken across the welded area of a galvanized
steel lap weld. It was found that the hardness
slightly decreases in the fusion and heat affected
zones. This is an indication that the weld does
not experience embrittlement due to oxides or
zinc impurities. Therefore, a weld is produced
with uniform strength and ductility. The heat-affected
zone is also minimal for the weld as seen in
Figure 3. |