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Effect of carbon addition on the microstructure and mechanical properties of CoCrFeNi high entropy alloy

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Abstract

The effects of C element on the microstructure and properties of CoCrFeNiC x high entropy alloys ( x denoted the atomic fraction of C element at 0, 0.05, 0.1, 0.2, 0.3, and 0.5) were investigated. The equal molar CoCrFeNi alloy with FCC structure exhibits high ductility but weak strength. With the addition of C element, both the hardness and strength of the CoCrFeNiC x high entropy alloys increase as well as the wear resistance. The solution strengthening and the formation of hard carbide phase are the main factor for the improved strength, hardness and wear resistance of CoCrFeNiC x high entropy alloys.

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Authors and Affiliations

  1. Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China

    TianDang Huang, ChangLiang Zhang, Hui Jiang, YiPing Lu & TingJu Li

  2. School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China

    Li Jiang

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  1. TianDang Huang
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  2. Li Jiang
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  3. ChangLiang Zhang
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  4. Hui Jiang
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  5. YiPing Lu
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Correspondence to YiPing Lu or TingJu Li.

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Huang, T., Jiang, L., Zhang, C. et al. Effect of carbon addition on the microstructure and mechanical properties of CoCrFeNi high entropy alloy. Sci. China Technol. Sci. 61, 117–123 (2018). https://doi.org/10.1007/s11431-017-9134-6

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  • DOI: https://doi.org/10.1007/s11431-017-9134-6

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