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  Amorphous phase separation in an Fe-based bulk metallic glass

Guo, W., Choi, P.-P., & Seol, J. B. (2017). Amorphous phase separation in an Fe-based bulk metallic glass. Materials Letters, 190, 161-164. doi:10.1016/j.matlet.2017.01.012.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-7079-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-707A-8
Genre: Journal Article

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 Creators:
Guo, Wei1, 2, Author              
Choi, Pyuck-Pa3, Author              
Seol, Jae Bok4, Author              
Affiliations:
1Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
2Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, 37831 TN, USA, ou_persistent22              
3Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea, ou_persistent22              
4National Institute for Nanomaterials Technology, POSTECH, Pohang, South Korea, persistent22              

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Free keywords: Amorphous carbon; Atoms; Carbon; Glass; High resolution transmission electron microscopy; Mechanical properties; Metals; Phase separation; Probes; Rare earth elements; Separation; Transmission electron microscopy; Yttrium; Yttrium alloys, Amorphous phase separation; Amorphous state; Atom probe tomography; Atomic configuration; Bulk metallic glass; Bulk metallic glass sheets; Devitrification process; Glass forming ability, Metallic glass
 Abstract: Although lanthanide elements play a critical role in increasing the glass forming ability and mechanical property alternation of Fe based bulk metallic glass (Fe-BMG), the atomic scale configuration of lanthanide in Fe-BMG remained unexplored. Here we have studied atomic configuration in the amorphous state of as-cast 4 mm FeCoCrMoCBY bulk metallic glass sheet and its mechanical properties by nanoindentation, transmission electron microscopy, and atom probe tomography. The current results showed that yttrium rich clusters are enriched with carbon atoms in the amorphous state, and the three dimensional densities of these clusters can influence the hardness at the localized region. The finding of Y-C rich clusters also suggests that the amorphous phase separation can precede the devitrification process. © 2017 Elsevier B.V.

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Language(s): eng - English
 Dates: 2017-03-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.matlet.2017.01.012
BibTex Citekey: Guo2017161
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Title: Materials Letters
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: - Volume / Issue: 190 Sequence Number: - Start / End Page: 161 - 164 Identifier: ISSN: 0167-577X
CoNE: /journals/resource/954925483654