Fig. 8From: Experimental investigation of surface roughness, flank wear, chip morphology and cost estimation during machining of hardened AISI 4340 steel with coated carbide insertSEM observation of chip morphology at v = 220 m/min, f = 0.09 mm/rev and d = 0.2 mm. Figure 8 shows the formation of saw tooth chip caused by sevier plastic deformation and oscillatory material flow at free (top) surface of the chipBack to article page