Experimental and numerical modelling of the residual stresses induced in orthogonal cutting of AISI 316L steel

• Published in: International journal of machine tools & manufacture Vol. 46; no. 14; pp. 1786 - 1794
• Main Authors: Outeiro, J.C., Umbrello, D., M’Saoubi, R.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.11.2006; Elsevier
• Subjects: Applied sciences; Cutting; Exact sciences and technology; FEM; Machining; Machining. Machinability; Mechanical engineering. Machine design; Metal cutting; Metals. Metallurgy; Modelling; Production techniques; Residual stresses; Modelling; Residual stresses; Metal cutting; Machining; FEM; Austenitic stainless steel; Cutting speed; Coatings; Modeling; Cutting tool materials; Penetration depth; Finite element method; Elastoplasticity; Size effect; Penetration rate; Orthogonal cutting; Chip tool interface; X ray radiography; Surface layer; Chip formation; Elastoviscoplasticity; Experimental study; X ray diffraction; Operating conditions; Cutting tool; Metallurgy; Residual stress; Stainless steel-316L
• ISSN: 0890-6955; 1879-2170
• DOI: 10.1016/j.ijmachtools.2005.11.013

Residual stresses in the machined surface layers are affected by the cutting tool, work material, cutting regime parameters (cutting speed, feed and depth of cut) and contact conditions at the tool/chip and tool/workpiece interfaces. In this paper, the effects of tool geometry, tool coating and cutting regime parameters on residual stress distribution in the machined surface and subsurface of AISI 316L steel are experimentally and numerically investigated. In the former case, the X-ray diffraction technique is applied, while in the latter an elastic–viscoplastic FEM formulation is implemented. The results show that residual stresses increase with most of the cutting parameters, including cutting speed, uncut chip thickness and tool cutting edge radius. However, from the range of cutting parameters investigated, uncut chip thickness seems to be the parameter that has the strongest influence on residual stresses. The results also show that sequential cuts tend to increase superficial residual stresses.