Recent Advances on High-Entropy Alloys for 3D Printing

Area of Science:

• Materials Science
• Additive Manufacturing
• Metallurgy

Background:

• High-entropy alloys (HEAs) show promise in various applications.
• Conventional manufacturing limits geometric complexity.
• 3D printing offers new possibilities for HEA development.

Purpose of the Study:

• To review recent advancements in 3D printing of high-entropy alloys.
• To cover powder development, printing processes, microstructures, properties, and applications.
• To provide insights into future research directions.

Main Methods:

• Review of powder development techniques (atomization, mechanical alloying).
• Discussion of 3D printing processes (directed energy deposition, selective laser melting, electron beam melting).
• Analysis of microstructural features, mechanical properties, and functionalities.

Main Results:

• 3D printing facilitates the creation of complex HEA structures.
• Specific printing processes influence phase formation and crystal features.
• 3D-printed HEAs exhibit desirable mechanical properties and functionalities.
• Potential applications identified in aerospace, energy, molding, and tooling.

Conclusions:

• 3D printing significantly expands the potential of high-entropy alloys.
• Further research is needed to optimize processes and explore new applications.
• Additive manufacturing is key to unlocking the full capabilities of HEAs.