Heat Affected Zone (HAZ)
Heating of the surrounding area is significantly reduced and consequently all the negatives associated with a heat-affected zone are no longer present. No melt zone. No microcracks. No shock wave that can delaminate multilayer materials. No stress that can damage adjacent structures, and no recast layer.
Figure 8.1: Slag formed in the heat affected zone (HAZ) during a long-pulse micromachining process.
Figure 8.2: Absence of slag and HAZ during an ultrashort-pulse micromachinng process.