Abstract
The atomic packing and electronic structure for Co43Fe 20Ta5.5B31.5 metallic glass (MG) were explored by extended X-ray absorption fine structure measurement and first-principles calculation. It is shown that the short-range order in this MG is of a (Co, Fe)B2-like, but not (Co, Fe)23B6-like, crystallographic structure. A network-like medium-range order can be formed via the build-up of B-centered Z9 〈0, 3, 6, 0〉 Voronoi polyhedra. The intrinsic strengthening mechanism is attributed to the formation of strong covalent bonding between B and Co (Fe).
Original language | English (US) |
---|---|
Pages (from-to) | 257-260 |
Number of pages | 4 |
Journal | Scripta Materialia |
Volume | 68 |
Issue number | 5 |
DOIs | |
State | Published - Mar 2013 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys