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Open AccessArticle

Drilling Process in γ-TiAl Intermetallic Alloys

1
Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 San Sebastián, Spain
2
Department of Mechanical Engineering, University of the Basque Country (UPV/EHU), Nieves Cano 12, 01006 Vitoria, Spain
3
CFAA, University of the Basque Country (UPV/EHU), Parque Tecnológico de Zamudio 202, 48170 Bilbao, Spain
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(12), 2379; https://doi.org/10.3390/ma11122379
Received: 26 October 2018 / Revised: 16 November 2018 / Accepted: 21 November 2018 / Published: 26 November 2018
(This article belongs to the Special Issue Machining—Recent Advances, Applications and Challenges)
Gamma titanium aluminides (γ-TiAl) present an excellent behavior under high temperature conditions, being a feasible alternative to nickel-based superalloy components in the aeroengine sector. However, considered as a difficult to cut material, process cutting parameters require special study to guarantee component quality. In this work, a developed drilling mechanistic model is a useful tool in order to predict drilling force (Fz) and torque (Tc) for optimal drilling conditions. The model is a helping tool to select operational parameters for the material to cut by providing the programmer predicted drilling forces (Fz) and torque (Tc) values. This will allow the avoidance of operational parameters that will cause excessively high force and torque values that could damage quality. The model is validated for three types of Gamma-TiAl alloys. Integral hard metal end-drilling tools and different cutting parameters (feeds and cutting speeds) are tested for three different sized holes for each alloy. View Full-Text
Keywords: Gamma-TiAl; superalloys; slight materials; drilling; titanium aluminides Gamma-TiAl; superalloys; slight materials; drilling; titanium aluminides
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MDPI and ACS Style

Beranoagirre, A.; Urbikain, G.; Calleja, A.; López de Lacalle, L.N. Drilling Process in γ-TiAl Intermetallic Alloys. Materials 2018, 11, 2379.

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