High entropy alloys: Next-generation material for space exploration

High entropy materials (HEMs) have become a prominent research focus because of their remarkable properties, such as superior thermal stability, mechanical strength, and oxidation resistance, including High entropy alloys (HEAs), high-entropy polymers (HEPs), and high-entropy ceramics (HECs). These unique materials hold significant potential for advanced applications across leading industries, including aerospace, defense, military, biomedical, and chemical sectors. An overview of a diverse range of HEAs, their effects, classification, and various entropy alloy manufacturing techniques is presented to discover the optimized HEAs for significant applications particularly relevant to the aerospace industry. Their exceptional performance in the numerous fields of applications has made HEAs a promising alternative over solitary metals, alloys, and composites. Furthermore, it highlights numerous challenges faced in manufacturing. It presents a detailed analysis of the future scope of their development to enhance their applicability in aerospace and other high-demand fields.