Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of Heat Treatment on Indentation Properties and Corrosion Behavior of Al0.3CrCuCoxFeyNi3-x-y High-entropy Alloy

열처리가 Al0.3CrCuCoxFeyNi3-x-y 고엔트로피 합금의 압입특성과 부식 거동에 미치는 영향

  • Hyeonsu Park (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Junyoung Kim (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Minhyeok Kang (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Kyeongryeol Bae (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Jun Hyun Lee (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Sung Hwan Kim (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Si Yeon Lee (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • Tae Yeon Park (School of Materials Science and Engineering, Kumoh National Institute of Technology) ;
  • In-Chul Choi (School of Materials Science and Engineering, Kumoh National Institute of Technology)
  • 박현수 (국립금오공과대학교 신소재공학과) ;
  • 김준영 (국립금오공과대학교 신소재공학과) ;
  • 강민혁 (국립금오공과대학교 신소재공학과) ;
  • 배경렬 (국립금오공과대학교 신소재공학과) ;
  • 이준현 (국립금오공과대학교 신소재공학과) ;
  • 김성환 (국립금오공과대학교 신소재공학과) ;
  • 이시연 (국립금오공과대학교 신소재공학과) ;
  • 박태연 (국립금오공과대학교 신소재공학과) ;
  • 최인철 (국립금오공과대학교 신소재공학과)
  • Received : 2024.10.28
  • Accepted : 2024.11.21
  • Published : 2024.11.30
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Abstract

In this study, to address the recent increasing demand for high-entropy alloys, an economical high-entropy alloy was fabricated and the mechanical properties and corrosion behavior of the fabricated alloy were studied. By reducing the contents of relatively expensive elements, Co and Ni, and increasing the proportion of inexpensive alloying element, Fe, in a high-entropy alloy of the Al0.3CrCuCoxFeyNi3-x-y system, an economical high-entropy alloy with excellent mechanical properties was fabricated. The mechanical properties and corrosion behavior of the Al0.3CrCuCoxFeyNi3-x-y high-entropy alloys were evaluated by using nanoindentation tests, Vickers hardness tests, and potentio-dynamic polarization experiments. The analysis results showed that replacing Ni and Co with Fe improved the mechanical properties without decreasing the corrosion resistance. It is expected that high-entropy alloys with excellent mechanical properties and improved economic feasibility can be fabricated by utilizing this.

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Acknowledgement

이 연구는 국립금오공과대학교 대학 연구과제비로 지원되었음(2022~2024).