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  Nano-laminated thin film metallic glass design for outstanding mechanical properties

Kontis, P., Köhler, M., Evertz, S., Chen, Y. T., Schnabel, V., Soler, R., et al. (2018). Nano-laminated thin film metallic glass design for outstanding mechanical properties. Scripta Materialia, 155, 73-77. doi:10.1016/j.scriptamat.2018.06.015.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-AE36-F Version Permalink: http://hdl.handle.net/21.11116/0000-0001-AE39-C
Genre: Journal Article

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 Creators:
Kontis, Paraskevas1, Author              
Köhler, Mathias1, Author              
Evertz, Simon2, Author              
Chen, Y. T.2, Author              
Schnabel, Volker3, Author              
Soler, Rafael4, Author              
Bednarick, J.5, Author              
Kirchlechner, Christoph4, Author              
Dehm, Gerhard6, Author              
Raabe, Dierk7, Author              
Schneider, Jochen Michael8, Author              
Gault, Baptiste1, Author              
Affiliations:
1Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863384              
2Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, Aachen, Germany, persistent22              
3Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, Aachen, Germany, ou_persistent22              
4Nano-/ Micromechanics of Materials, Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863401              
5Deutsches Elektronen Synchrotron DESY, FS-PE group, Notkestrasse 85, Hamburg, Germany, persistent22              
6Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863398              
7Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381              
8Materials Chemistry, Lehrstuhl für Werkstoffchemie, RWTH Aachen, Germany, ou_persistent22              

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Free keywords: Boron; Cobalt; Fracture; Fracture toughness; Glass; High resolution transmission electron microscopy; Lamellar structures; Metallic glass; Probes; Tantalum; Transmission electron microscopy, Atom probe tomography; Compositional variation; Future designs; Glass microstructure; Hybridization; Mechanical performance; Metallic glass thin films; Thin film metallic glass, Thin films
 Abstract: We report the enhancement of fracture toughness and strength of a cobalt‑tantalum-based metallic glass thin film with increasing boron content. The improvement of the mechanical performance is attributed to the formation of a compositionally lamellar compared to uniform glass microstructure, which becomes thinner with increasing boron content as revealed by transmission electron microscopy. Compositional variations across the lamellar structure are revealed by atom probe tomography. Cobalt- and boron-rich regions alternate sequentially, whereas tantalum exhibits slight variations across the lamellae. Our results can be utilized in future design efforts for metallic glass thin films with outstanding mechanical performance. © 2018 Acta Materialia Inc.

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Language(s): eng - English
 Dates: 2018-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.scriptamat.2018.06.015
BibTex Citekey: Kontis201873
 Degree: -

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Title: Scripta Materialia
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier B. V.
Pages: - Volume / Issue: 155 Sequence Number: - Start / End Page: 73 - 77 Identifier: ISSN: 1359-6462
CoNE: /journals/resource/954926243506