Research Article
Reduced Coefficient of Friction of Laser Surface Hardened AISI 4130 Steel Substrates
Figure 6
Vickers hardnesss of the samples (cross section). The ordinate origin corresponds to the free surface exposed to the laser treatment under B (base) and C (coated) conditions. The vertical lines correspond approximately to the fusion zone (FZ), heat-affected zone (HAZ), and base material (BM).