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Study of a Novel Ceramic Tool Performance in the Machining of Ti-6Al-7Nb Alloys

Published online by Cambridge University Press:  30 September 2019

Ricardo del Risco-Alfonso ,
Hector R. Siller ,
Roberto Pérez-Rodríguez Open the ORCID record for Roberto Pérez-Rodríguez [Opens in a new window]  and
Arturo Molina
Ricardo del Risco-Alfonso
Affiliation:
Assistant Professor. Center for the Study, Manufacturing and Re-manufacturing of Equipment and Parts, University of Camagüey, Cuba. rrisco7188a@gmail.com
Hector R. Siller
Affiliation:
Assistant Professor. Department of Engineering Technology. University of North Texas, USA. hector.siller@unt.edu
Roberto Pérez-Rodríguez*
Affiliation:
Professor. Director of the CAD/CAM Study Center. University of Holguin, Cuba. roberto.perez@uho.edu.cu
Arturo Molina
Affiliation:
Vice-presidency of Research and Technological Transfer. Tecnológico de Monterrey, Mexico. armolina@itesm.mx
*
*(Email: roberto.perez@uho.edu.cu)
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Abstract

Considering their distinctive properties, titanium alloys are used in foremost industries, including the aeronautic, automotive and biomedical industries. The reduced machinability of titanium alloys is due to their low thermal conductivity and high plasticity behavior. In the biomedical sector, one of the most studied alloys is Ti-6Al-4V. In the case of the Ti-6Al-7Nb alloy, scarce investigations are identified, related to machinability studies. The machining of Ti-6Al-7Nb alloy requires the development of new tools with higher properties, which provide better performance. The objective of this study is to present the experimental results related to a novel ceramic cutting tool, in terms of cutting tool life and productivity, in the machining of Ti-6Al-7Nb alloy. A turning operation of a 25 mm diameter bar was performed; the cutting speed was varied in three levels. The results showed the high performance of this type of tools, from the point of view of machinability. The values of the obtained cutting forces are found in the ranges reported by the consulted literature using ceramic tools. The surface roughness values were considered appropriate, taking into account that the tool is recommended for roughing and semi-finishing operations. The most relevant results were obtained in terms of productivity, considering that the performance is 2.53 times higher than the presented in similar works.

Keywords

ceramicmachiningalloy
Type
Articles
Information
MRS Advances , Volume 4 , Issue 55-56: International Materials Research Congress XXVIII , 2019 , pp. 3007 - 3015
Copyright
Copyright © Materials Research Society 2019 

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