Turning-induced surface integrity for a fillet radius in a 316L austenitic stainless steel

Turning is a machining process extensively applied to produce revolution parts. Durability of these parts are known depend on the turning signature that often referred as surface integrity. The integrity generated in fillet radius has been barely studied literature so far, despite well-known geometrical stress concentration factor such singularities. Therefore this paper deals with investigation machining-induced when 316L austenitic stainless steel. Different characterization methods used for purpose - SEM, EBSD, nanoindentation and X-Ray diffraction. It points out turning-induced consequences not homogeneous along machined profile. Residual stresses strongly affected microstructure highly modified over depth 80 μm leads mechanical properties gradient. evidenced average uncut chip thickness main governing parameter regarding also reported deformation twins appear zone. highlights evolution at given rather consequence severe plastic high strain rate than dynamic recrystallization.