An atomically quantized hierarchy of shear transformation zones in a metallic glass
dc.contributor.author | Ju, JongDoo | |
dc.contributor.author | Nwankpa, Amadi | |
dc.contributor.author | Atzmon, Michael | |
dc.date.accessioned | 2011-03-18T13:23:45Z | |
dc.date.accessioned | 2011-03-18T13:23:45Z | |
dc.date.available | 2011-03-18T13:23:45Z | en_US |
dc.date.issued | 2011-03-15 | |
dc.identifier.citation | Journal of Applied Physics 109, 053522 (2011). <http://hdl.handle.net/2027.42/83284> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/83284 | |
dc.description | Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The article originally appeared in Journal of Applied Physics 109, 0533522 (2011) and may be found at http://link.aip.org/link/?JAP/109/053522. | |
dc.description.abstract | Quasistatic measurements of room-temperature anelastic relaxation were used to characterize the properties of shear transformation zones (STZs) in amorphous Al86.8Ni3.7Y9.5 in the dilute limit. Using a combination of nanoindenter cantilever bending and mandrel bend relaxation techniques, anelastic relaxation was measured over times ranging from 1 s to 3 107 s. Direct spectrum analysis yields relaxation-time spectra, which display seven distinct peaks. The results were analyzed using a linear dashpot-and-spring model, combined with transition-state theory, to yield several STZ properties. These reveal a quantized hierarchy of STZs that differ from each other by one atomic volume. Potential STZs occupy a large volume fraction of the solid. They access their ergodic space, with the ratio of forward-to backward jump rates ranging from 1.03 to 4.3 for the range of stress values used. | en_US |
dc.description.sponsorship | US National Science Foundation (NSF), Grant No.DMR-0605911 | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | American Institute of Physics | en_US |
dc.subject | Metallic Glass | en_US |
dc.subject | Mechanical Behavior | en_US |
dc.title | An atomically quantized hierarchy of shear transformation zones in a metallic glass | 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 | Nuclear Engineering and Radiological Sciences | en_US |
dc.contributor.affiliationum | Material Science and Engineering | en_US |
dc.contributor.affiliationother | Dongchan Jang | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/83284/1/Ju JAP 2011.pdf | |
dc.identifier.doi | 10.1063/1.3552300 | |
dc.identifier.source | Journal of Applied Physics | en_US |
dc.description.mapping | 26 | en_US |
dc.owningcollname | Materials Science and Engineering, Department of |
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