High Entropy Alloys: Manufacturing Routes

More principal elements, higher elemental concentrations, and simple solid solution phases of BCC, FCC, or HCP structures present challenges for the preparation of high-entropy alloys (HEAs). Most of the typical methods, such as arc-melting, physical vapor deposition, etc., can be applied to manufacturing routes of HEAs. When selecting these methods, both macroscopic morphology (e.g., shape) and expected microstructure should be considered. According to the dimension and shape of the HEA products, HEAs can be broadly divided into four types: bulk HEAs, HEA coatings, HEA fibers, and HEA powders. This chapter provides a brief review on the manufacturing routes of these four types of HEAs.