Phase transformation and strengthening mechanisms of nanostructured high-entropy alloys

Abstract High-entropy alloys (HEAs) have become a research focus because of their easy access to nanostructures and the characteristics high strength, hardness, wear resistance, oxidation been applied in aerospace lightweight materials, ultrahigh temperature high-performance biomimetic materials. At present, study HEAs mainly focuses on microstructure mechanical properties. Mo, Ti, V, Nb, Hf, Ta, Cr, W series while Fe, Co, Ni, Cu, Mn good toughness. However, emergence medium-entropy alloys, metastable HEAs, dual-phase multiphase increased complexity HEA system, phase transition mechanism strengthening toughening mechanisms were not fully established. In this article, preparation, formation, transformation as well are reviewed. The inductive effects alloying elements, temperature, magnetism, pressure systematically analyzed. discussed, which provides reference for design performance optimization HEAs.