The effect of femtosecond laser micromachining on the surface characteristics and subsurface microstructure of amorphous FeCuNbSiB alloy

Detailed studies on the effects of femtosecond laser ablation on surface characteristics and subsurface microstructure of amorphous FeCuNbSiB alloy are reported. Three types of ripple structures were observed on the material surface in the gentle ablated (damaged) zone. As observed with X-ray diffraction (XRD), amorphous form is kept in the damaged zone, and there is few crystallization form in ablation zone.