High Entropy Alloys: Overview of multi-principal element alloys and some results on structure and production of a CrCoFeNiAlCu alloy

The term “high entropy alloys” (HEAs) was introduced in 2004. Since then, scientists worldwide have studied these alloys. They are designated as alloys of five or more principal elements in equimolar or near-equimolar ratios. Typically, HEAs are known to form single phases, such as BCC, FCC, and HCP, with simple crystalline structures. However, some authors have evaluated their multiphase behaviour. The seminar lecture will delve into the structures and properties of some of these alloys, giving an overview of their potential. In particular, a CrCoFeNiAlCu-based alloy made by powder metallurgy through its design, production, and characterisation.

Additionally, the lecture will serve as an exposition and introduction to the presenting author, his work, and his overall background in the Group of Powder Technology from the University of Carlos III of Madrid.