Nanoporous metallic materials (NPMM) exhibit high strength, low density, and a high surface-area-to-volume ratio, but are brittle at the macroscopic level. Single-phase high entropy alloys (HEAs) have exceptional structural characteristics with high strength, ductility, good fracture toughness, and resistance to corrosion and fatigue. Based on the high ductility of HEAs, we propose that HEAs would outperform existing NPMM. Using molecular dynamics (MD), simulations reveal that the specific modulus of our NPHEAs is three times higher than that of single-element NPMM. Its specific strength is seven times greater, approaching values comparable to bulk metals possessing the highest specific strength.
We will present MD results for different NPHEAs and their effects on mechanical properties under thermal aging and neutron irradiation. We will also discuss the origin of their remarkable mechanical properties. Furthermore, we will provide evidence of their high corrosion resistance, even at high temperatures, and explain how it will be studied.