High-entropy alloys (HEAs) represent a revolutionary class of materials characterized by their multi-principal element compositions and exceptional mechanical properties. Powder metallurgy, a versatile and cost-effective manufacturing process, offers significant advantages for the development of HEAs, including precise control over their composition, microstructure, and mechanical properties. This review explores innovative approaches integrating powder metallurgy techniques in the synthesis and optimization of HEAs. Key advances in powder production, sintering methods, and additive manufacturing are examined, highlighting their roles in improving the performance, advancement, and applicability of HEAs. The review also discusses the mechanical properties, potential industrial applications, and future trends in the field, providing a comprehensive overview of the current state and future prospects of HEA development using powder metallurgy.

1. Introduction 
2. Fundamentals and background of High-Entropy Alloys 
    2.1. Constituents of Elements and Structure 
    2.2. Exceptional Properties of HEAs 
3. Powder Metallurgy Processes 
    3.1. Powder Production 
    3.2. Sintering and Consolidation Methods in Powder Metallurgy 
    3.3. Advantages of PM in Alloy Development 
    3.4. Comparison with Other Processing Routes 
4. Mechanical and Thermal Properties of HEAs 
5. Applications of HEAs Produced by Powder Metallurgy 
6. Conclusions and Challenges in HEA Development 
Funding
Conflict of Interest 
Data Availability Statement 
Author Information and Contribution 
Acknowledgement
References

• Sheetal Kumar Dewangan(Department of Materials Science and Engineering, Ajou University, Suwon, 16499, Republic of Korea)
• Cheenepalli Nagarjuna(Department of Materials Science and Engineering, Ajou University, Suwon, 16499, Republic of Korea)
• Hansung Lee(Department of Materials Science and Engineering, Ajou University, Suwon, 16499, Republic of Korea)
• Reliance Jain(Department of Materials Science and Engineering, Ajou University, Suwon, 16499, Republic of Korea)
• Man Mohan(Department of Materials Science and Engineering, Ajou University, Suwon, 16499, Republic of Korea, Department of Mechanical Engineering, Rungta College of Engineering and Technology, Bhilai, 490024, India)
• Byungmin Ahn(Department of Materials Science and Engineering, Ajou University, Suwon, 16499, Republic of Korea, Department of Energy Systems Research, Ajou University, Suwon, 16499, Republic of Korea) Corresponding author
• K. Raja Rao(Department of Energy Systems Research, Ajou University, Suwon, 16499, Republic of Korea)