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Licensed Unlicensed Requires Authentication Published by De Gruyter May 28, 2019

Tribological behavior of a hydrostatically extruded ultra-fine grained Ti-13Nb-13Zr alloy

Aslı Gunay Bulutsuz, Mehmet Emin Yurci, Kadir Ozaltin, Witold Chrominski and Malgorzata Lewandowska
From the journal Materials Testing


This contribution summarizes the results an investigation of the wear resistance of as received initial state and nano-structured Ti-13Nb-13Zr alloy obtained by hydrostatic extrusion. The tribological behavior was examined using a ball-on-disc tribometer under unlubricated sliding contact conditions against an Al2O3 ceramic ball. Friction coefficient, material transfer and wear debris of the samples were observed after the wear tests. Wear characteristics of the samples were investigated by means of an optical profilometer, mechanical profilometer and scanning electron microscope for wear debris morphology and wear tracks. Although friction coefficients are very similar according to tribological observations, the domestic distribution of wear characteristics varied for samples of various grain sizes. Morphological observations have shown that surface responses to abrasive ceramic balls involve localized long and short wear debris, fracture, surface plowing causing adhesive wear and the formation of larger surface debris, and material transfer between titanium and the ceramic counterpart.

*Correspondence Address, Dr. Aslı Gunay Bulutsuz, Researcher, Department of Mechanical Engineering, Yildiz Technical University, Besiktas 34349, Istanbul, Turkey, E-mail: ,

Dr. Aslı Günay Bulutsuz, born in 1987, received her PhD in 2017. Her research work focuses on plastic deformation, severe plastic deformation technologies and biomaterials. She has been working at the Mechanical Engineering, Materials Science and Manufacturing Division, Yildiz Technical University, Istanbul, Turkey, since 2013 as a researcher.

Prof. Dr. Mehmet Emin Yurci, born 1948, is Professor and a part-time Researcher in the Faculty of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey. His interest areas are mold design, plastic deformation, severe plastic deformation and deep drawing.

Dr. Kadir Özaltin, born in 1981. received his PhD in 2016. He is working at Warsaw University of Technology, Poland. His interest areas are the mechanical behavior of materials, severe plastic deformation, and characterization.

Dr. Witold Chrominski, born in 1988, has been working at the Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland, since 2013. His interest areas are characterization via transmission electron microscope, material deformation modeling, severe plastic deformation and characterization.

Prof. Dr. Malgorzata Leandowska, born 1968, is a full-time Professor at the Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland. Her interest areas include ultrafine grained materials, severe plastic deformation, microstructure characterization and mechanical testing of materials.


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Published Online: 2019-05-28
Published in Print: 2019-06-01

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