A Review on Additive Manufacturing of Lightweight High-Entropy Alloys: Methods, Properties, and Applications

Lightweight High-Entropy Alloys (LHEAs) represent an advanced class of alloys that exhibit superior mechanical and physical performance compared to conventional alloys. Characterized by a density of less than 6 g/cm³ and consisting of at least five elements in concentrations ranging from 5% to 35%, these alloys have emerged as promising alternatives to aluminum alloys due to their high strength-to-weight ratio. The integration of additive manufacturing (AM) into this field has enabled the production of complex components and enhanced the performance of these materials. Among various AM techniques, Wire Arc Additive Manufacturing (WAAM) has shown significant potential due to its ability to induce fusion and refine material properties. This review aims to explore the additive manufacturing methods applied to LHEAs, highlighting their unique properties, the advancements in AM technologies, and the associated challenges and opportunities in this emerging field.

A Review on Additive Manufacturing of Lightweight High-Entropy Alloys: Methods, Properties, and Applications Keywords:

Lightweight high-entropy alloys , Additive manufacturing , Lightweight alloys , Wire arc welding , Mechanical properties , Advanced materials