Investigation on residual stress evolution in nickel-based alloy affected by multiple cutting operations

• DOI: 10.1016/j.jmapro.2021.06.015
• Publication Date: 2021-06-18T11:22:25Z
• Authors: Yang Liu; Dongdong Xu; Mathias Agmell; Aylin Ahadi; Jan-Eric Stahl; Jinming Zhou
• Keywords: Inconel; Rake angle; Chip formation

Machining-induced residual stresses in a part can significantly influence its performance and service time. It is common that the final surface of produced after multiple cuts machining process. In cuts, previous could often generate accumulated strain/stress temperature on surface. These will be brought to subsequent cut or continuously affect cutting forces, process temperatures, deformation zones, etc. cut, eventually part. This paper reports joint experimental numerical investigation explore with consideration parameters, procedure, tool geometries Inconel 718 alloy. Coupled Eulerian Lagrangian (CEL) formulation used two/three-cuts model. The loading cycles selected material nodes are characterised based isotropic constitutive model (Johnson-Cook model) analyse underlying mechanism stress evolution during sequences. results show stress/strain induced by lead more curled chip morphology, slight decrease force increase feed cut. An increased magnitude depth compressive finished workpiece generated owing this obvious when implemented at larger uncut thickness, using negative rake angle edge radius tool. level might controlled optimizing get desired integrity.