This study investigates the interfacial reaction between powder-metallurgy high-entropy alloys (HEAs) and cast aluminum. HEA pellets are produced by the spark plasma sintering of Al0.5CoCrCu0.5FeNi HEA powder. These sintered pellets are then placed in molten Al, and the phases formed at the interface between the HEA pellets and cast Al are analyzed. First, Kirkendall voids are observed due to the difference in the diffusion rates between the liquid Al and solid HEA phases. In addition, although Co, Fe, and Ni atoms, which have low mixing enthalpies with Al, diffuse toward Al, Cu atoms, which have a high mixing enthalpy with Al, tend to form Al–Cu intermetallic compounds. These results provide guidelines for designing Al matrix composites containing high-entropy phases.

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

• 김민상(한국자동차연구원 첨단구조소재연구센터, 한양대학교 신소재공학부) | Min-Sang Kim (Metallic Material R&D Center, Korea Automotive Technology Institute,Department of Materials Science & Engineering, Hanyang University)
• 손한솔(국민대학교 신소재공학과) | Hansol Son (School of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea)
• 정차희(국민대학교 신소재공학과) | Cha Hee Jung (School of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea)
• 한주연(국민대학교 신소재공학과) | Juyeon Han (School of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea)
• 김정준(국민대학교 신소재공학과) | Jung Joon Kim (School of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea)
• 김영도(한양대학교 신소재공학부) | Young-Do Kim (Department of Materials Science & Engineering, Hanyang University, Seoul, Republic of Korea)
• 최현주(국민대학교 신소재공학과) | Hyunjoo Choi (School of Materials Science and Engineering, Kookmin University, Seoul, Republic of Korea)
• 김세훈(한국자동차연구원 첨단구조소재연구센터) | Se Hoon Kim (Metallic Material R&D Center, Korea Automotive Technology Institute, Cheonan-si, Republic of Korea) Corresponding Author