Wear and Corrosion Behaviour of Wire Electrical Discharge Machined Ti-6A1-4V alloy

Abstract

The objective of the current research work is to study the wear and corrosion behavior of Ti-6Al-4V ELI alloy. WEDM is preferred over conventional machining for Ti alloys, as they are hard-to-machine materials. Wear and corrosion tests were performed using wear and friction monitor (Ducom Model TR20-LE) and electrochemical workstation (Autolab PGSTAT204) respectively. SEM and EDS were also carried out on each sample for evaluating the surface morphology and to know the exact composition of the material. WEDM rough and trim-cut modes improve the surface hardness of Ti-6Al-4V ELI alloy and hence affects their c.o.f. and wear rates. The outcomes of the present research work promote WEDM trim-cut mode over rough-cut mode because it results in lower values of c.o.f., wear and corrosion rates.

A review on Wire-EDM of bio titanium

“…The optimum combination of parameters was 8 µs as pulse duration; 13 µs as pulse-off duration; 45 V as servo voltage; and 8 N as wire rigidity for 95% dimensional accuracy; 3.163 µm average roughness; and 22.99 µm mean roughness depth. According to an important study, WEDM can significantly improve wear and fatigue resistance by developing a non-corrosive and biocompatible protective layer on the machined surface of Ti-6Al-4V ELI alloy after trim machining and thus enhances its service life and functional performance for biomedical applications [Manderna et al, 2022]. Wear and corrosion behavior of titanium were examined after two stages of machining by WEDM namely rough and trim cut.…”