Alloy Designs for High-Entropy Alloys, Bulk Metallic Glasses and High-Entropy Bulk Metallic Glasses

This paper describes high-entropy alloys (HEAs), bulk metallic glasses (BMGs) and high-entropy bulk metallic glasses (HE-BMGs) for their alloy design based on the quantities corresponding to the difference in atomic size and heat of mixing. The contents started with describing the differences between HEAs and BMGs, followed by the features of HE-BMGs by focusing on the universalities underlying these three alloys. The significance of thermodynamics with ability to describe the necessary quantities for designing these alloys as a function of alloy composition was argued by referring to the early studies. Furthermore, future prospects of these alloys in terms of alloy design are described for their further progress in researches.