Vacuum tribological behaviors of CoCrFeNi high entropy alloy at elevated temperatures

Yushan Geng; Jiao Chen; Hui Tan; Jun Cheng; Jun Yang; Weimin Liu

doi:10.1016/j.wear.2020.203368

Vacuum tribological behaviors of CoCrFeNi high entropy alloy at elevated temperatures

Yushan Geng, Jiao Chen, Hui Tan, Jun Cheng, Jun Yang, Weimin Liu

科研成果: 期刊稿件 › 文章 › 同行评审

75 引用（Scopus）

摘要

High entropy alloys (HEAs) are an important candidate for high temperature mechanical systems. Here, effects of atmosphere, temperature and counterparts on the vacuum tribological behaviors of CoCrFeNi HEA fabricated by spark plasma sintering were systematically studied. Comparison of tribological behaviors in vacuum and air indicated that tribo-oxidation is detrimental to the wear resistance of CoCrFeNi HEA within temperature range 25–400 °C, but positive at 600 and 800 °C. The CoCrFeNi HEA obtains relatively low wear in vacuum when low testing temperatures and heterogeneous counterface are selected. The wear resistance of CoCrFeNi HEA in vacuum is superior or comparable to the steel and intermetallics.

源语言	英语
文章编号	203368
期刊	Wear
卷	456-457
DOI	https://doi.org/10.1016/j.wear.2020.203368
出版状态	已出版 - 15 9月 2020
已对外发布	是

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title = "Vacuum tribological behaviors of CoCrFeNi high entropy alloy at elevated temperatures",

abstract = "High entropy alloys (HEAs) are an important candidate for high temperature mechanical systems. Here, effects of atmosphere, temperature and counterparts on the vacuum tribological behaviors of CoCrFeNi HEA fabricated by spark plasma sintering were systematically studied. Comparison of tribological behaviors in vacuum and air indicated that tribo-oxidation is detrimental to the wear resistance of CoCrFeNi HEA within temperature range 25–400 °C, but positive at 600 and 800 °C. The CoCrFeNi HEA obtains relatively low wear in vacuum when low testing temperatures and heterogeneous counterface are selected. The wear resistance of CoCrFeNi HEA in vacuum is superior or comparable to the steel and intermetallics.",

keywords = "CoCrFeNi high Entropy alloy, High temperature, Spark plasma sintering, Tribo-chemistry, Vacuum",

author = "Yushan Geng and Jiao Chen and Hui Tan and Jun Cheng and Jun Yang and Weimin Liu",

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day = "15",

doi = "10.1016/j.wear.2020.203368",

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T1 - Vacuum tribological behaviors of CoCrFeNi high entropy alloy at elevated temperatures

AU - Geng, Yushan

AU - Chen, Jiao

AU - Tan, Hui

AU - Cheng, Jun

AU - Yang, Jun

AU - Liu, Weimin

PY - 2020/9/15

Y1 - 2020/9/15

N2 - High entropy alloys (HEAs) are an important candidate for high temperature mechanical systems. Here, effects of atmosphere, temperature and counterparts on the vacuum tribological behaviors of CoCrFeNi HEA fabricated by spark plasma sintering were systematically studied. Comparison of tribological behaviors in vacuum and air indicated that tribo-oxidation is detrimental to the wear resistance of CoCrFeNi HEA within temperature range 25–400 °C, but positive at 600 and 800 °C. The CoCrFeNi HEA obtains relatively low wear in vacuum when low testing temperatures and heterogeneous counterface are selected. The wear resistance of CoCrFeNi HEA in vacuum is superior or comparable to the steel and intermetallics.

AB - High entropy alloys (HEAs) are an important candidate for high temperature mechanical systems. Here, effects of atmosphere, temperature and counterparts on the vacuum tribological behaviors of CoCrFeNi HEA fabricated by spark plasma sintering were systematically studied. Comparison of tribological behaviors in vacuum and air indicated that tribo-oxidation is detrimental to the wear resistance of CoCrFeNi HEA within temperature range 25–400 °C, but positive at 600 and 800 °C. The CoCrFeNi HEA obtains relatively low wear in vacuum when low testing temperatures and heterogeneous counterface are selected. The wear resistance of CoCrFeNi HEA in vacuum is superior or comparable to the steel and intermetallics.

KW - CoCrFeNi high Entropy alloy

KW - High temperature

KW - Spark plasma sintering

KW - Tribo-chemistry

KW - Vacuum

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DO - 10.1016/j.wear.2020.203368

M3 - 文章

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SN - 0043-1648

VL - 456-457

JO - Wear

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Vacuum tribological behaviors of CoCrFeNi high entropy alloy at elevated temperatures

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