Shear transformation zone analysis of anelastic relaxation of a metallic glass reveals distinct properties of α and β relaxations

Show simple item record

dc.contributor.author Lei, T.J.
dc.contributor.author DaCosta, L. Rangel
dc.contributor.author Liu, M.
dc.contributor.author Wang, W.H.
dc.contributor.author Sun, Y.H.
dc.contributor.author Greer, A.L.
dc.contributor.author Atzmon, Michael
dc.date.accessioned 2019-09-04T16:41:38Z
dc.date.available 2019-09-04T16:41:38Z
dc.date.issued 2019
dc.identifier.citation Physical Review E 100, 033001 (2019) en_US
dc.identifier.uri http://hdl.handle.net/2027.42/150657
dc.description.abstract Metallic glasses with pronounced high-frequency β relaxation in their dynamic-mechanical response have been observed to exhibit large plasticity. Due to their disordered atomic structure, it is challenging to identify the microscopic mechanisms of their relaxation behavior. Quasistatic anelastic relaxation measurements have been performed over 10 orders of magnitude of time on La55Ni20Al25 metallic glass, which exhibits a strong β relaxation. The corresponding time-constant spectra were computed from the data—they contain a series of peaks corresponding to an atomically quantized hierarchy of shear transformation zones (STZs), where both the α and β relaxations are consistent with the STZ model. Two different regimes of activation-volume increment between the peaks are observed, suggesting the involvement of different elements in STZs corresponding to α vs β relaxations. Room-temperature structural relaxation significantly affects the former but not the latter. en_US
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.title Shear transformation zone analysis of anelastic relaxation of a metallic glass reveals distinct properties of α and β relaxations en_US
dc.type Article en_US
dc.subject.hlbsecondlevel Materials Science and Engineering
dc.subject.hlbtoplevel Engineering
dc.description.peerreviewed Peer Reviewed en_US
dc.contributor.affiliationum Materials Science and Engineering, Department of en_US
dc.contributor.affiliationumcampus Ann Arbor en_US
dc.description.bitstreamurl https://deepblue.lib.umich.edu/bitstream/2027.42/150657/1/Lei etal PhysRevE.100.033001.pdf
dc.identifier.source Physical Review E en_US
dc.description.mapping 26 en_US
dc.identifier.orcid 0000-0002-1166-2283 en_US
dc.identifier.orcid 0000-0001-8966-0408 en_US
dc.identifier.orcid 0000-0002-7055-1313 en_US
dc.identifier.name-orcid Lei, Tianjiao; 0000-0002-1166-2283 en_US
dc.identifier.name-orcid Rangel DaCosta, Luis; 0000-0001-8966-0408 en_US
dc.identifier.name-orcid Atzmon, Michael; 0000-0002-7055-1313 en_US
dc.owningcollname Materials Science and Engineering, Department of
 Show simple item record

This item appears in the following Collection(s)


Search Deep Blue

Advanced Search

Browse by

My Account

Information

Available Now


MLibrary logo