Basics of Additive Manufacturing Processes for High-Entropy Alloys

Abstract

). Thus, ∆ S conf for equimolar alloys with 3, 5, 6, 9, and 13 elements equal to 1.10 R , 1.61 R , 1.79 R , 2.20 R , and 2.57 R , respectively. In addition, if the formation enthalpies of two strong intermetallic compounds ( e.g. , NiAl and TiAl) are divided by their respective melting points, the resulting ∆ S conf , 1.38 R and 2.06 R , belong to the same range as the entropy changes of mixing in a system with more than five elements [1]. This evidences that the tendency to ters such as laser power, scanning speed, and powder­feed rate are analysed for their influences on the microstructure and mechanical properties of the final pro­ duct. The post­processing techniques for additive­manufactured HEAs are conside­ red. The importance of steps such as heat treatment, surface finishing, and machin­ ing in achieving the desired material properties and dimensional accuracy in AM­ produced HEA components is underlined. Overviewing the HEAs, their application in AM processes, the influence of process parameters, and post­processing consi­ derations, this work can act as a useful source of information for researchers on the way to amendment of the understanding and implementation of AM in the HEAs.