Machined surface plastic strain in orthogonal cutting by subsequent recrystallizations technique

Abstract

The subsequent recrystallization technique, an experimental strain measurement method by use of recrystallization phenomena, has been successfully applied for machined surface plastic zones with equivalent plastic strain ϵ≥0.5, 0.12 and 0.02 of type 304 stainless steel. The depth of the zone with ϵ≥0.5 is very small, 10–50 μm, while zones with ϵ≥0.12 and 0.02 are 100–200 μm and 200–450 μm, respectively. The depths increase with increasing depth of cut and with decreasing rake angle. The relation between the depth of the zones and the cutting parameters are shown. The deformation state ahead of the quick-stop cut tip was also well visualized by the technique.