Direct imaging of structural heterogeneity of the melt-spun Fe{sub 85.2}Si{sub 2}B{sub 8}P{sub 4}Cu{sub 0.8} alloy

Journal Article · Mon Jun 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4923329· OSTI ID:22493923

Sato, Kazuhisa; Takenaka, Kana; Makino, Akihiro ^[1]; Hirotsu, Yoshihiko ^[2]

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1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
2. Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567-0047 (Japan)

A structural heterogeneity of the melt-spun Fe{sub 85.2}Si{sub 2}B{sub 8}P{sub 4}Cu{sub 0.8} alloy has been studied by spherical aberration (C{sub s}) corrected high-resolution transmission electron microscopy. Hollow-cone illumination imaging revealed that the density of coherent scattering regions in the as-quenched Fe{sub 85.2}Si{sub 2}B{sub 8}P{sub 4}Cu{sub 0.8} alloy is much higher than that in the Fe{sub 76}Si{sub 9}B{sub 10}P{sub 5} bulk metallic glass. According to the C{sub s}-corrected TEM, crystalline atomic clusters, typically of ∼1 nm in diameter, are densely distributed in an amorphous matrix of Fe{sub 85.2}Si{sub 2}B{sub 8}P{sub 4}Cu{sub 0.8} 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.

• OSTI ID: 22493923
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 6 Vol. 5; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
ATOMIC CLUSTERS
BCC LATTICES
BORON ALLOYS
COHERENT SCATTERING
COPPER ALLOYS
CRYSTALS
DENSITY
ILLUMINANCE
IRON BASE ALLOYS
METALLIC GLASSES
NANOSTRUCTURES
RESOLUTION
SILICON ALLOYS
TRANSMISSION ELECTRON MICROSCOPY