In this paper, a new Co10Fe10Mn35Ni35Zn10 high entropy alloy (HEA) is identified as a strong candidate for the single face-centered cubic (FCC) structure screened using the upgraded TCFE2000 thermodynamic CALPHAD database. The Co10Fe10Mn35Ni35Zn10 HEA is fabricated using the mechanical (MA) procedure and pressure-less sintering method. The Co10Fe10Mn35Ni35Zn10 HEA, which consists of elements with a large difference in melting point and atomic size, is successfully fabricated using powder metallurgy techniques. The MA behavior, microstructure, and mechanical properties of the Co10Fe10Mn35Ni35Zn10 HEA are systematically studied to understand the MA behavior and develop advanced techniques for fabricating HEA products. After MA, a single FCC phase is found. After sintering at 900℃, the microstructure has an FCC single phase with an average grain size of 18 μm. Finally, the Co10Fe10Mn35Ni35Zn10 HEA has a compressive yield strength of 302 MPa.

Abstract
 1. 서 론
 2. 실험 방법
 3. 결과 및 고찰
 4. 결 론
 References

• 임다미(포항공과대학교 신소재공학과, 고엔트로피합금연구단) | Dami Yim
• 박형근(포항공과대학교 신소재공학과, 고엔트로피합금연구단) | Hyung Keun Park
• Antonio Joao Seco Ferreira Tapia(포항공과대학교 신소재공학과, 고엔트로피합금연구단)
• 이병주(포항공과대학교 신소재공학과, 고엔트로피합금연구단) | Byeong-Joo Lee
• 김형섭(포항공과대학교 신소재공학과, 고엔트로피합금연구단) | Hyoung Seop Kim Corresponding Author