Direct imaging of structural heterogeneity of the melt-spun Fe85.2Si2B8P4Cu0.8 alloy | Zendy

Kazuhisa Sato | Zendy; Kana Takenaka | Zendy; Akihiro Makino | Zendy; Yoshihiko Hirotsu | Zendy

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Direct imaging of structural heterogeneity of the melt-spun Fe85.2Si2B8P4Cu0.8 alloy

Author(s) -

Kazuhisa Sato,

Kana Takenaka,

Akihiro Makino,

Yoshihiko Hirotsu

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4923329

Subject(s) - alloy , transmission electron microscopy , amorphous metal , materials science , annealing (glass) , scattering , crystallography , amorphous solid , crystallization , melt spinning , nanocrystal , high resolution transmission electron microscopy , molecular physics , composite material , optics , chemistry , nanotechnology , physics , organic chemistry , fiber

A structural heterogeneity of the melt-spun Fe85.2Si2B8P4Cu0.8 alloy has been studied by spherical aberration (Cs) corrected high-resolution transmission electron microscopy. Hollow-cone illumination imaging revealed that the density of coherent scattering regions in the as-quenched Fe85.2Si2B8P4Cu0.8 alloy is much higher than that in the Fe76Si9B10P5 bulk metallic glass. According to the Cs-corrected TEM, crystalline atomic clusters, typically of ∼1 nm in diameter, are densely distributed in an amorphous matrix of Fe85.2Si2B8P4Cu0.8 alloy. Observation of four-fold and six-fold atomic arrangements of these clusters implies existence of Fe clusters with the body centered cubic structure. These Fe clusters must be responsible for the formation of ultrahigh-density α-Fe nanocrystals produced by post-annealing

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