| METALS AND METAL MATRIX COMPOSITES |
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| Effects of Environment and Normal Load on Tribological Property of (TiVCrAlMo)N High-entropy Alloy Films |
| WANG Zheng1,2, CAI Zhaobing1,2,*, CHEN Feihuan2, DONG Yinghui3, ZHANG Po1, CHEN Juan2,3, GU Le1,2, ZENG Liangcai1,2,3,*
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1 Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
2 Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
3 Precision Manufacturing Institute, Wuhan University of Science and Technology, Wuhan 430081, China |
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Abstract In this work, the tribological behaviors of (TiVCrAlMo)N high-entropy alloy (HEA) films under dry, 16C, deionized water and three viscosity oils (0W-20, 10W-30 and 5W-40) were studied, and the effects of different loads (1 N, 2 N and 3 N) on the tribological properties were investigated. The results revealed that under 1N and 2N, the friction coefficient of HEA films in 16C and lubricating oil was much lower than that in dry and deionized water, however, the friction coefficient of HEA film decreases greatly in deionized water under 3 N. The wear rate of HEA film in low viscosity oil (0W-20) increased with the increase of load, while the wear rate in medium viscosity oil (10W-30) decreased with the increase of load, moreover, there was no obvious linear relationship between the wear rate and load in high viscosity oil (5W-40). The wear mechanisms of HEA film in dry were abrasive and delamination wears, but oxidation wear occurred with the increase of load. The wear mechanisms in 16C were fatigue and oxidation wears, but it was only slight abrasive wear under 1 N. The wear mechanisms in deionized water were abrasive and oxidation wears. In low viscosity oil (0W-20) under 1 N, the wear mechanism of HEA film was slight abrasive wear, but turns to fatigue wear with the increase of load. On the contrary, the wear mechanism in medium viscosity oil (10W-30) was fatigue wear, but turns to slight abrasive wear with the increase of load. In addition, the wear mechanism of HEA film in high viscosity oil (5W-40) was abrasive wear, but there was additional oxidation wear under 2 N.
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Published: 25 September 2023
Online: 2023-09-18
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| Fund:National Natural Science Foundation of China (51905524). |
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2023, Vol. 37 
