We experimentally analyzed the forming of micromechanical properties in subsurface layers of machined workpieces depending on cutting parameters such as cutting speed, feed, axial depth of cut and radial depth of cut of milling cutters. Springback development was examined in orthogonal cutting. The micromechanical properties in subsurface layers were measured with nanoscratch tests depending on the cutting parameters. When measuring the value of springback in the orthogonal cutting of the titanium alloy Ti-1023 with varying cutting parameters and geometries of the tool wedge, it was detected that the elastoplastic springback value increased with rising cutting speed and axial depth of cut. Springback decreased with increasing tool orthogonal rake angle. Raising the feed and the radial depth of cut of the milling cutter led to a proportional increase in the tangential force component of the resistance to movements of the indenter in the material’s subsurface layers in nanoscratch tests. Moreover, increasing the feed of the milling cutter led to a proportional increase in the amplitudes of the five lower frequencies of the tangential force’s signal. This characterizes a growing scattering of the strength properties of larger fragments in subsurface layers of the milled material.
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Recommended by Editor Hyung Wook Park
Michael Storchak received his Dr.-Ing. degree at the Institute for Superhard Material in Kiev, Ukraine in 1984 and his Dr. Sc. at Technical University in Kiev, Ukraine in 1994. Since 1997 he has worked at the University of Stuttgart, Institute for Machine Tools, Germany. His main research interests are development of cutting processes and tools, simulation of machining processes.
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Storchak, M., Zakiev, I. & Träris, L. Mechanical properties of subsurface layers in the machining of the titanium alloy Ti10V2Fe3Al. J Mech Sci Technol 32, 315–322 (2018). https://doi.org/10.1007/s12206-017-1231-9