Abstract
Ti6Al4V alloy has been widely used in many fields, such as aerospace and medicine, due to its excellent biocompatibility and mechanical properties. Most high-performance components made of Ti6Al4V alloy usually need to be polished to produce their specific functional requirements. However, due to the material properties of Ti6Al4V, its polishing process still requires significant development. Therefore, this study aimed to investigate the performance of polishing Ti6Al4V by using tools with different rigidities. Two kinds of bonnet tool were used, namely a pure rubber (PR) bonnet and a semirigid (SR) bonnet. The characterization of material removal and surface integrity after polishing was conducted through a series of experiments on a 6-DOF robotic polishing device. The results demonstrate that both bonnet tools successfully produce nanometric level surface roughness. Moreover, the material removal rate of the SR bonnet tool is significantly higher than that of the PR bonnet, which is consistent with the material removal characteristics of glass polishing in previous research. In addition, the presented analysis on key polishing parameters and surface integrity lays the theoretical foundation for the polishing process of titanium alloy in different application fields.
Highlights
Introduction published maps and institutional affilTi6Al4V alloy is an α+β-type, dual-phase alloy with excellent material properties [1,2,3], including low density, high mechanical strength, good corrosion resistance, high biocompatibility, and other distinct mechanical and physical properties
The results indicated that a better surface finish of titanium alloys was achieved after electric pulse treatment (EPT)
volume removal rate (VRR) be seen from all these comparisons that under the same conditions, th of both of the two bonnet tools gradually decrease with the increase in dwell time and of the cross-section of which the SR
Summary
Introduction published maps and institutional affilTi6Al4V alloy is an α+β-type, dual-phase alloy with excellent material properties [1,2,3], including low density, high mechanical strength, good corrosion resistance, high biocompatibility, and other distinct mechanical and physical properties. It offers the ability to adjust these material properties to a large extent by optimizing its microstructure and surface properties [4,5,6,7] It has been widely used in the manufacture of turbine engine blades, compressor discs, jet engines in the aerospace industry, and armor steel used for bullet-proofing in the military industry [8,9,10]. Low surface roughness is usually required to obtain superior functionality for most of its applications, such as implants and turbine blades [18,19]. It is a typical hard-to-machine material like other iations
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