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Metals 2018, 8(7), 543;

Hole Making by Electrical Discharge Machining (EDM) of γ-TiAl Intermetallic Alloys

Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 San Sebastián, Spain
Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), Nieves Cano 12, 01006 Vitoria, Spain
CFAA, University of the Basque Country (UPV/EHU), Parque Tecnológico de Zamudio 202, 48170 Bilbao, Spain
Author to whom correspondence should be addressed.
Received: 18 June 2018 / Revised: 4 July 2018 / Accepted: 11 July 2018 / Published: 14 July 2018
(This article belongs to the Special Issue Machining and Finishing of Nickel and Titanium Alloys)
PDF [4702 KB, uploaded 14 July 2018]


Due to their excellent strength-to-weight ratio and corrosion and wear resistance, γ-TiAl alloys are selected for aerospace and automotive applications. Since these materials are difficult to cut and machine by conventional methods, this study performed drilling tests using Electro Discharge Machining (EDM) to compare the machinability between two different types of γ-TiAl: extruded MoCusi and ingot MoCuSi. Different electrode materials and machining parameters were tested and wear, surface hardness, roughness and integrity were analyzed. The results indicate that extruded MoCuSi is preferable over MoCuSi ingots. View Full-Text
Keywords: γ-TiAl intermetallic alloys; EDM; grinding γ-TiAl intermetallic alloys; EDM; grinding

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Beranoagirre, A.; Urbikain, G.; Calleja, A.; López de Lacalle, L.N. Hole Making by Electrical Discharge Machining (EDM) of γ-TiAl Intermetallic Alloys. Metals 2018, 8, 543.

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