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Type: Journal article
Title: Deformation of Ti-based bulk metallic glass under a cutting tip
Author: Basak, A.
Zhang, L.
Citation: Tribology Letters, 2018; 66(1):1-8
Publisher: Springer
Issue Date: 2018
ISSN: 1023-8883
Statement of
A. K. Basak, Liangchi Zhang
Abstract: This study aims to investigate the fundamental deformation mechanism of Ti-based bulk metallic glass under mechanical loading by a cutting tip. The cutting tip interaction is resolved into two separate actions, namely nanoindentation by using a Berkovich diamond indenter and contact sliding under a pin-on-disk configuration. The deformation details in the specimens due to the action of the corresponding mechanical loading were analyzed by SEM and TEM. It was found that under nanoindentation, the plastic deformation is evidenced by a series of pop-ins in load–displacement graphs. The temperature rise at the contact interface during sliding must have been above the glass transition temperature and the onset temperature of crystallization, leading to the formation of discrete nanocrystalline particles in the immediate subsurface and hence bringing about an increase in hardness of the metallic glass in the wear tracks.
Keywords: Plastic deformation; bulk metallic glass; indentation; microstructural change
Rights: © Springer Science+Business Media, LLC, part of Springer Nature 2018
DOI: 10.1007/s11249-017-0975-9
Grant ID: ARC
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Mechanical Engineering publications

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