Electro-discharge machining of Ti-6AI-4V alloy using Cu-TaC compact electrode with urea dielectric: Reactions and their effects on the machined surface

Ndaliman, Mohammed Baba and Khan, Ahsan Ali and Lafia-Araga, Ruth Anayimi (2017) Electro-discharge machining of Ti-6AI-4V alloy using Cu-TaC compact electrode with urea dielectric: Reactions and their effects on the machined surface. In: 2017 8th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT), 3rd February-6th February 2017, Cape Town, South Africa.

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Abstract

This paper presents the investigation of compounds / phases formed during the Electrical Discharge Machining (EDM) of titanium alloy (Ti-6AI-4V) with Cu-TaC compact electrode using urea dielectric fluid. It is proposed that the materials involved in the machining are likely to react and form new compounds on the EDMed surface. The outcomes of the reactions were predicted. The EDMed surfaces were subjected to energy dispersive X-ray spectroscopy (ED X) and X-ray diffraction (XRD) analysis to determine the changes in the surface composition. Results of EDX analysis indicate the presence of additional elements (Cu, Ta, 0 and C) on the surface of the parent alloy. XRD results also confirm the main compounds formed on the surface to include metallic oxides, carbides and nitrides (TaC, TiC, Ti1N, TiD) of tantalum and titanium. It is concluded that the surface was reinforced during the EDM with hardened ceramic layers which are capable of enhancing its wear properties.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	3129/62616
Uncontrolled Keywords:	EDM; Ti-6AI-4Valloy; Cu-TaC compact electrode; Urea dielectric fluid
Subjects:	T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof. Dr. Ahsan Ali Khan
Date Deposited:	12 Mar 2018 15:10
Last Modified:	17 Aug 2019 16:02
URI:	http://irep.iium.edu.my/id/eprint/62616

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