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Dry‐Sliding Wear Response of MoTaWNbV High Entropy Alloy
Author(s) -
Poulia Anthoula,
Georgatis Emmanuel,
Lekatou Angela,
Karantzalis Alexander
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600535
Subject(s) - materials science , alloy , tribology , ceramic , metallurgy , high entropy alloys , friction coefficient , ball (mathematics) , coefficient of friction , composite material , mathematical analysis , mathematics
In this work, the tribological performance of Mo 20 Ta 20 W 20 Nb 20 V 20 Refractory High Entropy Alloy was examined. The alloy's wear response was tested under different experimental conditions. With the use of a metallic ball as a counter body partner, the morphology of the wear track and the presence of Fe oxides controlled the wear rate. When using a ceramic ball for the same sliding distances, similar observations were made regarding the width of the wear tracks and the reduction of the friction coefficient with an increase of the sliding distance. The examination of the debris further explained the wear mechanisms in every case. Finally, by comparing the wear response of Mo 20 Ta 20 W 20 Nb 20 V 20 with that of a commercial super alloy, the improved behavior of the High Entropy Alloy was highlighted in all cases.