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Research Article | Open Access

Analysis of the high-temperature dry sliding behavior of CoCrFeNiTi0.5Alx high-entropy alloys

Azmi ERDOĞAN1( ), Mustafa Sabri GÖK2, Sakin ZEYTIN3
 Department of Metallurgy and Materials Engineering, Faculty of Engineering, Bartın University, Bartın 74100, Turkey
 Department of Mechanical Engineering, Faculty of Engineering, Bartın University, Bartın 74100, Turkey
 Department of Metallurgy and Materials Engineering, Faculty of Engineering, Sakarya University, Sakarya 54100, Turkey
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Abstract

In this study, CoCrFeNiTi0.5Alx high-entropy alloys were produced by induction melting and their dry sliding wear behavior was examined at different temperatures. In addition to face-centered cubic (FCC) phases, low amounts of a tetragonal phase were detected in the microstructures of alloys without Al and microscratches were formed by wear particles on the worn surfaces of the alloy specimens. Two body-centered cubic (BCC) phases were detected in the alloy with 0.5Al and a fatigue-related extrusion wear mechanism was detected on the worn surface. The alloy specimen with a high Al content exhibited the best wear characteristics. No wear tracks were formed in single-phase BCC intermetallic alloys at room temperature and they exhibited a higher wear strength at high temperatures when compared to other samples.

Keywords

frictionhigh-entropy alloydry sliding wearintermetallic

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Friction
Volume 8 Issue 1,
February 2020
Pages 198-207
DOI: 10.1007/s40544-019-0278-2
Cite this article:
ERDOĞAN A, Sabri GÖK M, ZEYTIN S. Analysis of the high-temperature dry sliding behavior of CoCrFeNiTi0.5Alx high-entropy alloys. Friction, 2020, 8(1): 198-207. https://doi.org/10.1007/s40544-019-0278-2

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Received: 11 October 2018
Revised: 03 December 2018
Accepted: 13 January 2019
Published: 15 April 2019
© The author(s) 2019

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