High entropy alloy synthesis, characterisation, manufacturing & potential applications: a review

High entropy alloys (HEAs) are an emerging class of engineering materials with excellent mechanical, thermal, chemical and electrical properties due to constituent alloying elements and type of synthesis/processing criteria. This literature review intends to find product manufacturing aspects from HEAs while relating them to their synthesis and characterisation. A wide range of synthesis modes has been developed for HEAs recently. Methods of synthesis, both bulk and powder-based, are reviewed and discussed at length in this article. Based on the researcher's results, various characterisation studies like materials, mechanical, chemical, electrical, and magnetic are also discussed. For product manufacturing, it is observed that very few machinability studies have been carried out on HEAs to honour post-machining material properties. Research on HEAs in the manufacturing domain, if done, will lead to their extensive industrial applications. Further, several potential applications have been suggested for specific HEAs based on the composition of constituent elements.