3D residual stress modelling in turning of AISI 4140 steel

This study presents a 3D residual stress modelling method in turning of AISI 4140 steel. To carry out this work, we used a recently developed server-based software called MISULAB, which incorporates physically machined surface and 3D thermo-mechanical loadings. Simple longitudinal turning tests and residual stress measurements of the turned surface were conducted, and the effects of the feed rate and tool geometry including a wear zone on the simulation results for the residual stress gradients were considered. Experimental and simulation results on the residual stress gradients induced by longitudinal turning of AISI 4140 steel at two low feed rates (0.05 mm/rev and 0.1 mm/rev) clearly showed the effects of the feed rate on residual stress gradients.