Nanomechanical properties of Al-Tb marginal metallic glass

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dc.contributor.authorid0000-0001-6753-9316
dc.contributor.coauthorOkuyucu, Can
dc.contributor.coauthorUlucan, Tolga Han
dc.contributor.coauthorAbboud, Mohammad
dc.contributor.coauthorMotallebzadeh, Amir
dc.contributor.coauthorOzerinc, Sezer
dc.contributor.coauthorKalay, Ilkay
dc.contributor.coauthorKalay, Yunus Eren
dc.contributor.departmentN/A
dc.contributor.kuauthorMotallebzadeh, Amir
dc.contributor.kuprofileResearcher
dc.contributor.researchcenterKoç University Surface Science and Technology Center (KUYTAM) / Koç Üniversitesi Yüzey Teknolojileri Araştırmaları Merkezi (KUYTAM)
dc.contributor.schoolcollegeinstituteN/A
dc.date.accessioned2025-01-19T10:33:03Z
dc.date.issued2023
dc.description.abstractAl-Rare Earth (RE) metallic glasses provide an effective model system to study the effect of nanocrystallites in an amorphous matrix on nanomechanical behavior. In this work, we achieved a series of Al-Tb metallic glasscrystalline composites with systematically varying crystalline content through annealing. The nanomechanical properties were characterized using micropillar compression tests and nanoindentation for as-quenched amorphous and annealed amorphous/nanocrystalline composite specimens. The promising hardness increases after annealing from 3.0 GPa to 4.6 GPa and elastic modulus increment from 68 GPa to 92 GPa were discussed in detail, considering the structural features of Al-RE marginal metallic glass formers. The increase in elastic modulus is associated with the nucleated fcc-Al nanocrystals that divide the amorphous matrix, leading to the branching of the shear bands. The correlation between the fcc-Al nanocrystals and the behavior of shear bands was discussed in detail.
dc.description.indexedbyWoS
dc.description.indexedbyScopus
dc.description.publisherscopeInternational
dc.description.sponsorsThis material is based upon work supported by the United States Air Force Office of Scientific Research under award number FA9550-20-1-0261. We would like to thank Dr. Matthew J. Kramer for his support in specimen preparation. We also appreciate Koc University KUYTAM, Bilkent University UNAM, and METU Central Laboratory for their valuable support.
dc.description.volume888
dc.identifier.doi10.1016/j.msea.2023.145809
dc.identifier.eissn1873-4936
dc.identifier.issn0921-5093
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-85174609697
dc.identifier.urihttps://doi.org/10.1016/j.msea.2023.145809
dc.identifier.urihttps://hdl.handle.net/20.500.14288/26535
dc.identifier.wos1108316900001
dc.keywordsMetallic glasses
dc.keywordsMicropillar compression
dc.keywordsAluminum alloys
dc.keywordsAmorphous materials
dc.keywordsNanocrystalline materials
dc.languageen
dc.publisherElsevier Science Sa
dc.relation.grantnoUnited States Air Force Office of Scientific Research [FA9550-20-1-0261]; METU Central Laboratory
dc.sourceMaterials Science and Engineering A-Structural Materials Properties Microstructure and Processing
dc.subjectNanoscience
dc.subjectNanotechnology
dc.titleNanomechanical properties of Al-Tb marginal metallic glass
dc.typeJournal Article

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