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

doi:10.1016/j.scriptamat.2012.10.030

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

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The atomic packing and electronic structure for Co₄₃Fe ₂₀Ta_5.5B_31.5 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	https://doi.org/10.1016/j.scriptamat.2012.10.030
出版状态	已出版 - 3月 2013
已对外发布	是

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title = "Structural mechanism for ultrahigh-strength Co-based metallic glasses",

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).",

keywords = "Extended X-ray absorption fine structure, First-principles calculation, Metallic glass, Short-range ordering",

author = "X. Hui and Lin, {D. Y.} and Chen, {X. H.} and Wang, {W. Y.} and Y. Wang and Shang, {S. L.} and Liu, {Z. K.}",

year = "2013",

month = mar,

doi = "10.1016/j.scriptamat.2012.10.030",

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TY - JOUR

T1 - Structural mechanism for ultrahigh-strength Co-based metallic glasses

AU - Hui, X.

AU - Lin, D. Y.

AU - Chen, X. H.

AU - Wang, W. Y.

AU - Wang, Y.

AU - Shang, S. L.

AU - Liu, Z. K.

PY - 2013/3

Y1 - 2013/3

N2 - 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).

AB - 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).

KW - Extended X-ray absorption fine structure

KW - First-principles calculation

KW - Metallic glass

KW - Short-range ordering

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DO - 10.1016/j.scriptamat.2012.10.030

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SN - 1359-6462

VL - 68

SP - 257

EP - 260

JO - Scripta Materialia

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Structural mechanism for ultrahigh-strength Co-based metallic glasses

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