About Febased amorphous alloy, the cuttingforce experiment is made, which was compared with 45 steel. The interactive effects of cutting speed and depth of cut on the main cutting force and resultant cutting force were investigated. The results demonstrate that the main cutting forces are less and the resultant cutting forces are larger than 45 steel at the same cutting parameters, all of which decrease with the increase of the cutting speed and increase with the increase of the depth of cut. The crystallization of chips is approximately 525% at 80 m/min. It is proved that the formation mechanism of the serrated chip is the localized shear deformation. As the one of the evidences, the plentiful microvoids are discovered at 60 m/min and a lot of viscous fluids are observed at above the 80 m/min in the lamellar structures of the shearing zone.