| Metallic glasses possess excellent properties such as high strength, hardness and corrosion resistance due to their unique atomic structure. However, most metallic glasses can only maintain structural stability for a very short time. Therefore, in view of this limitation of metallic glasses , a series of new Co-Cr-Mo-Nb-B high-entropy metallic glasses with high thermal stability and high corrosion resistance have been developed. The glass transition temperature is up to 1058 K, the hardness is up to 18.1 GPa, and it has excellent corrosion resistance in hydrochloric acid solution, which is the best amorphous alloy with integrative performance reported so far. The electronic structure and bonding characteristics of Co26Cr26Mo26Nb7B15 high-entropy metallic glass were studied by density functional theory and molecular dynamics simulation, and the internal mechanism of the excellent properties of Co–Cr–Mo–Nb–B high-entropy metallic glasses was revealed from the perspective of electronic structure. This study is expected that this study can provide a new method for the design of metallic glass alloys with high stability, high hardness, and high corrosion resistance and has potential applications in the field of high-temperature alloys. |
