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dc.contributor.author
Sohrabi, Navid
dc.contributor.author
Jhabvala, Jamasp
dc.contributor.author
Kurtuldu, Güven
dc.contributor.author
Stoica, Mihai
dc.contributor.author
Parrilli, Annapaola
dc.contributor.author
Berns, Siddartha
dc.contributor.author
Polatidis, Efthymios
dc.contributor.author
Van Petegem, Steven
dc.contributor.author
Hugon, Sylvain
dc.contributor.author
Neels, Antonia
dc.contributor.author
Löffler, Jörg F.
dc.contributor.author
Logé, Roland E.
dc.date.accessioned
2021-01-11T08:02:56Z
dc.date.available
2020-12-26T03:39:29Z
dc.date.available
2021-01-11T08:02:56Z
dc.date.issued
2021-02-01
dc.identifier.issn
0264-1275
dc.identifier.issn
1873-4197
dc.identifier.other
10.1016/j.matdes.2020.109400
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/458604
dc.identifier.doi
10.3929/ethz-b-000458604
dc.description.abstract
Bulk metallic glasses (BMGs) are high-strength, highly elastic materials due to their disordered atomic structure. Because BMGs require sufficiently high cooling rates to bypass crystallization, laser-based additive manufacturing (AM) methods have recently been employed for the fabrication of BMGs. In this study, we present an optimized Laser Powder-Bed Fusion (LPBF) process on a Zr-based BMG (Zr59.3Cu28.8Al10.4Nb1.5, in at.%), with a focus on characterization, mechanical properties, and dimensional accuracy. A volumetric density of 99.82% was achieved. Although the sample was qualified as amorphous via laboratory X-ray diffraction experiments, a more meticulous study using synchrotron radiation revealed nanocrystals in the heat-affected zones (HAZs) of the melt pool. Fast differential scanning calorimetry (FDSC) and numerical simulations were then employed to illustrate the mechanism of crystallization. The LPBF-processed alloy revealed excellent mechanical properties, such as high hardness, wear resistance, compressive strength, and flexural strength. Apart from vein-like patterns, the fracture surfaces of the compression test samples showed liquid-like features, which indicate a significant local temperature increase during fracture. The dimensional accuracy was assessed with a benchmark exhibiting complex geometrical features and reached at least 40 μm. The results indicate that LPBF processing is a promising route for the manufacturing of BMGs for various applications.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Additive manufacturing
en_US
dc.subject
Bulk metallic glass
en_US
dc.subject
Laser powder-bed fusion
en_US
dc.subject
Nano-crystallization
en_US
dc.subject
Precision manufacturing
en_US
dc.subject
Selective laser melting
en_US
dc.title
Characterization, mechanical properties and dimensional accuracy of a Zr-based bulk metallic glass manufactured via laser powder-bed fusion
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2020-12-10
ethz.journal.title
Materials & Design
ethz.journal.volume
199
en_US
ethz.journal.abbreviated
Mater. des.
ethz.pages.start
109400
en_US
ethz.size
14 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Dep. Materialwissenschaft / Dep. of Materials::02645 - Institut für Metallforschung / Institute of Metals Research::03661 - Löffler, Jörg F. / Löffler, Jörg F.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02160 - Dep. Materialwissenschaft / Dep. of Materials::02645 - Institut für Metallforschung / Institute of Metals Research::03661 - Löffler, Jörg F. / Löffler, Jörg F.
ethz.date.deposited
2020-12-26T03:39:34Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2021-01-11T08:03:04Z
ethz.rosetta.lastUpdated
2021-02-15T23:04:06Z
ethz.rosetta.versionExported
true
ethz.COinS
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