Microstructure and Chemical State Analysis of Ti-6Al-4V Alloy During Abrasive Water Jet Machining Process

Abstract

AbstractAbrasive water jet machining (AWJM) is a process of cutting soft to hard materials without the use of heat. The three input parameters are waterjet pressure (WJP) (MPa), standoff distance (SOD) (mm), and abrasive flow rate (AFR) (kg/min), and the model variable is surface roughness. The image of a transmission electron microscope (TEM) was utilized to analyze dislocations on the machined surface, as well as the oxide production conformed from Raman spectra and Fourier Transform Infrared Spectroscopy (FT-IR). High density dislocation induced by compressive deformation during the abrasive water jet machining process forms dislocation cells in the material, helping in the creation of low angle grain boundaries, according to experimental data. The abrasive water jet machined sample wavenumber 913 cm−1 influence of C–O creation, the new band is present, the band intensity is raised by 145.27 cm−1 assigned O–Ti–O of the surface, according to the Raman spectra data. The FT-IR absorption bands 671.21 and 651.93 cm−1 are TiO2 properties owing to Ti–O vibration.KeywordsAWJMTi6Al4V alloyFT-IRRaman spectroscopy