Structural state of surface layers of X12M steel after laser-acoustic treatment

Surface microrelief and hardness of laser hardened and ultrasonically peened AISI D2 tool steel

“…Thus, the static roller burnishing [14,20] or dynamic action by ultrasonic treatment [21] or shot peening [22,23] used after laser hardening treatment has shown good results. There are several publications that have reported on the characteristics of the structure and hardness of steel surfaces [24,25] after the laser treatment followed by room temperature ultrasonic treatment [26,27]. However, to the best of the authors knowledge data describing the effects of combined action of the laser surface hardening and subsequent SPD process is practically absent.…”