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Volume 16
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10.3390/met16010050
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Effect of Carbon Addition on Mechanical and Corrosion Properties of CoCrFeNiMn High-Entropy Alloy

by
Huiling Zhou
1,
Hongqun Liu
2,
Ji Li
1,
Chengtao Li
2,
Haokun Yang
3 and
Yanxin Qiao
1,*
1
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
2
Suzhou Nuclear Power Research Institute, Suzhou 215004, China
3
Smart Manufacturing Division (SMD), Hong Kong Productivity Council, Hong Kong 999077, China
*
Author to whom correspondence should be addressed.
Metals 2026, 16(1), 50; https://doi.org/10.3390/met16010050 (registering DOI)
Submission received: 28 November 2025 / Revised: 25 December 2025 / Accepted: 26 December 2025 / Published: 30 December 2025
(This article belongs to the Special Issue Progress in Advanced High-Entropy Alloy Design and Applications: Microstructures, Mechanical, Electrochemical and Tribological Properties)
Versions Notes

Abstract

The CoCrFeNiMn High-Entropy Alloy (HEA) with 0, 0.5 and 1.0 at.% Carbon (C) addition has been evaluated by mechanical and corrosion testing, including tensile, wear and corrosion resistance testings. The result shows that the medium of 0.5 at.% C addition into HEA brings higher tensile toughness with 27,213.6 MPa%, less wear damage (0.37 mm3) and superior thermodynamic stability (0.73 VSCE), compared with that of the other two compositions. The tensile fracture observation points out that the high C addition embrittles the HEA with poorer toughness and wear resistance with content increasing to 1.0 at.%. The HEA material with 0.5 at.% C addition has high corrosion potential and the lowest corrosion current density, indicating that the appropriate C-alloying plays a significant role in determining the corrosion properties of HEA. The current study shall provide meaningful instruction for high-performance C-alloyed HEA development.
Keywords: high-entropy alloy; mechanical properties; wear; corrosion high-entropy alloy; mechanical properties; wear; corrosion

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MDPI and ACS Style

Zhou, H.; Liu, H.; Li, J.; Li, C.; Yang, H.; Qiao, Y. Effect of Carbon Addition on Mechanical and Corrosion Properties of CoCrFeNiMn High-Entropy Alloy. Metals 2026, 16, 50. https://doi.org/10.3390/met16010050

AMA Style

Zhou H, Liu H, Li J, Li C, Yang H, Qiao Y. Effect of Carbon Addition on Mechanical and Corrosion Properties of CoCrFeNiMn High-Entropy Alloy. Metals. 2026; 16(1):50. https://doi.org/10.3390/met16010050

Chicago/Turabian Style

Zhou, Huiling, Hongqun Liu, Ji Li, Chengtao Li, Haokun Yang, and Yanxin Qiao. 2026. "Effect of Carbon Addition on Mechanical and Corrosion Properties of CoCrFeNiMn High-Entropy Alloy" Metals 16, no. 1: 50. https://doi.org/10.3390/met16010050

APA Style

Zhou, H., Liu, H., Li, J., Li, C., Yang, H., & Qiao, Y. (2026). Effect of Carbon Addition on Mechanical and Corrosion Properties of CoCrFeNiMn High-Entropy Alloy. Metals, 16(1), 50. https://doi.org/10.3390/met16010050

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