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Title: 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

Abstract

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.

Authors:
; ;  [1];  [2]
  1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
  2. Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567-0047 (Japan)
Publication Date:
OSTI Identifier:
22493923
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 6; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Sato, Kazuhisa, E-mail: ksato@imr.tohoku.ac.jp, Takenaka, Kana, Makino, Akihiro, and Hirotsu, Yoshihiko. 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. United States: N. p., 2015. Web. doi:10.1063/1.4923329.
Sato, Kazuhisa, E-mail: ksato@imr.tohoku.ac.jp, Takenaka, Kana, Makino, Akihiro, & Hirotsu, Yoshihiko. 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. United States. doi:10.1063/1.4923329.
Sato, Kazuhisa, E-mail: ksato@imr.tohoku.ac.jp, Takenaka, Kana, Makino, Akihiro, and Hirotsu, Yoshihiko. Mon . "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". United States. doi:10.1063/1.4923329.
@article{osti_22493923,
title = {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},
author = {Sato, Kazuhisa, E-mail: ksato@imr.tohoku.ac.jp and Takenaka, Kana and Makino, Akihiro and Hirotsu, Yoshihiko},
abstractNote = {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.},
doi = {10.1063/1.4923329},
journal = {AIP Advances},
number = 6,
volume = 5,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2015},
month = {Mon Jun 15 00:00:00 EDT 2015}
}