Wang, J., Han, B., Chen, Z. et al. (3 more authors) (Cover date: 15 August 2023) Study on tribological oxide mechanism of CoCrFeNiMo high entropy alloy. Wear, 526-527. 204907. ISSN 0043-1648
Abstract
The oxide film can improve the tribological properties of high entropy alloy, but its formation needs further study. In this work, the tribological oxide mechanism of CoCrFeNiMo high entropy alloys was investigated by means of experiments and finite element simulation. Simulation results reveal that the formation and destruction of oxide film are related to contact stress, von Mises stress and tensile stress. The contact stress destroys the passivation film of CoCrFeNiMo high entropy alloy. Then von Mises stress causes plastic deformation on the surface to form oxide films. Finally, tensile stress causes these oxide films to crack. These results were confirmed by the experiment. When CoCrFeNiMo rubs with ZrO2, the increase of load can make the CoCrFeNiMo surface prone to plastic deformation, forming more oxide films. However, when it sildes against stainless steel no oxide film is formed on the surface of CoCrFeNiMo because there is no plastic deformation. Cracks in the oxide film perpendicular to the tensile stress were also observed on the surface, proving the destruction of periodic tensile stress.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. This is an author produced version of an article published in Wear. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Tribological oxide mechanism; High-entropy alloy; Water lubrication; Finite element modelling |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Functional Surfaces (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Oct 2023 15:22 |
Last Modified: | 10 Apr 2024 00:13 |
Published Version: | https://www.sciencedirect.com/science/article/pii/... |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.wear.2023.204907 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:203134 |
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