Surface integrity analysis of machined Inconel 718 over multiple length scales

• Published in: CIRP annals Vol. 61; no. 1; pp. 99 - 102
• Main Authors: M'Saoubi, Rachid, Larsson, Tommy, Outeiro, José, Guo, Yang, Suslov, Sergey, Saldana, Christopher, Chandrasekar, Srinivasan
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier Ltd 2012; Elsevier
• Subjects: Applied sciences; Deformation; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Inelasticity (thermoplasticity, viscoplasticity...); Integrity; Machining; Mechanical engineering. Machine design; Nanocomposites; Nanomaterials; Nanostructure; Nickel alloy; Nickel base alloys; Physics; Solid mechanics; Structural and continuum mechanics; Superalloys; Surface integrity; Tool wear; Surface integrity; Nickel alloy; Machining; Deformation band; Correlation; Inconel; Structure integrity; Surface analysis; Inelasticity; Optical microscopy; Elastoplasticity; Plasticity; Tool wear; Slip band; Localization; Surface conditions; Nickel base alloys; Electron backscattering; X ray radiography; Nanostructure; Experimental study; X ray diffraction; Indentation; Operating conditions; Transmission electron microscopy; Surface deformation; Cutting tool
• ISSN: 0007-8506
• DOI: 10.1016/j.cirp.2012.03.058

Surface integrity characteristics of machined Inconel 718 have been measured using experimental techniques, such as FEG-SEM, EBSD, XRD, TEM, nano-indentation and 3D optical microscopy. Nanosized grains typical of severe plastic deformation are characteristic of the machined surface while deformation in the form of plastic slip bands is typical of subsurface layers. Correlations are presented between deformation features on the machined surface, and cutting parameters and tool wear.