摘要
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).
源语言 | 英语 |
---|---|
页(从-至) | 257-260 |
页数 | 4 |
期刊 | Scripta Materialia |
卷 | 68 |
期 | 5 |
DOI | |
出版状态 | 已出版 - 3月 2013 |
已对外发布 | 是 |