Publication:
Effect of Sm on thermal and mechanical properties of Cu-Zr-Al bulk metallic glasses

Simple item page
dc.contributor.coauthorSıkan, Fatih
dc.contributor.coauthorAtabay, Sıla Ece
dc.contributor.coauthorÖzerinç, Sezer
dc.contributor.coauthorKalay, İlkay
dc.contributor.coauthorKalay, Yunus Eren
dc.contributor.departmentKUYTAM (Koç University Surface Science and Technology Center)
dc.contributor.kuauthorMotallebzadeh, Amir
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-11-09T23:37:17Z
dc.date.issued2019
dc.description.abstractThe effect of rare-earth (Sm) microalloying on the thermal stability and phase selection along with the effect of nanocrystallization on the mechanical properties of amorphous melt-spun ribbons of Zr50Cu40Al10, Zr49Cu39.2Al9.8Sm2 and Zr48Cu38.4Al9.6Sm4 alloys were investigated using differential scanning calorimetry (DSC), X-ray diffraction (XRD), transmission electron microscopy (TEM), Vickers and nanoindentation hardness tests and micropillar compression analysis. XRD and TEM analyses showed that all samples were fully amorphous in as-spun state; however, crystallization sequences for the Sm-free and the Sm micro-alloyed samples were different during devitrification. Combined study of XRD, DSC and TEM on melt-spun ribbons show that Zr48Cu38.4Al9.6Sm4 have nanocrystallization of Cu2Sm phase with an average diameter of 10 nm, which was absent in Zr50Cu40Al10, prior to crystallization of Cu10Zr7 phase. The nanoindentation and micropillar compression tests revealed Cu2Sm nanocrystals embedded in Zr48Cu38.4Al9.6Sm4 alloy improves strength and hardness. On the other hand, presence of these nanocrystals deteriorate shear band stability and thus result in a catastrophic brittle fracture through a single shear band burst.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.volume743
dc.identifier.doi10.1016/j.msea.2018.11.068
dc.identifier.eissn1873-4936
dc.identifier.issn0921-5093
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-85056967990
dc.identifier.urihttps://doi.org/10.1016/j.msea.2018.11.068
dc.identifier.urihttps://hdl.handle.net/20.500.14288/12792
dc.identifier.wos456891500017
dc.keywordsMetallic glasses
dc.keywordsNanocrystallization
dc.keywordsMicropillar compression test
dc.language.isoeng
dc.publisherElsevier Science Sa
dc.relation.ispartofMaterials Science and Engineering A-Structural Materials Properties Microstructure and Processing
dc.subjectNanoscience
dc.subjectNanotechnology
dc.subjectMaterials science
dc.subjectMetallurgy
dc.subjectMetallurgical engineering
dc.titleEffect of Sm on thermal and mechanical properties of Cu-Zr-Al bulk metallic glasses
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorMotallebzadeh, Amir
local.publication.orgunit1Research Center
local.publication.orgunit2KUYTAM (Koç University Surface Science and Technology Center)
relation.isOrgUnitOfPublicationd41f66ba-d7a4-4790-9f8f-a456c391209b
relation.isOrgUnitOfPublication.latestForDiscoveryd41f66ba-d7a4-4790-9f8f-a456c391209b
relation.isParentOrgUnitOfPublicationd437580f-9309-4ecb-864a-4af58309d287
relation.isParentOrgUnitOfPublication.latestForDiscoveryd437580f-9309-4ecb-864a-4af58309d287

Files

Collections

Publications without Fulltext