Structural mechanism for ultrahigh-strength Co-based metallic glasses

X. Hui, D. Y. Lin, X. H. Chen, W. Y. Wang, Y. Wang, S. L. Shang, Z. K. Liu

科研成果: 期刊稿件文章同行评审

14 引用 (Scopus)

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
68
5
DOI
出版状态已出版 - 3月 2013
已对外发布

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