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Article: A quantitative link between microplastic instability and macroscopic deformation behaviors in metallic glasses

TitleA quantitative link between microplastic instability and macroscopic deformation behaviors in metallic glasses
Authors
KeywordsAmorphous solids
Deformation mechanism
Macroscopic deformations
Macroscopic response
Macroscopic stress
Issue Date2009
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 2009, v. 106 n. 8 How to Cite?
AbstractBased on mechanical instability of individual shear transformation zones (STZs), a quantitative link between the microplastic instability and macroscopic deformation behavior of metallic glasses was proposed. Our analysis confirms that macroscopic metallic glasses comprise a statistical distribution of STZ embryos with distributed values of activation energy, and the microplastic instability of all the individual STZs dictates the macroscopic deformation behavior of amorphous solids. The statistical model presented in this paper can successfully reproduce the macroscopic stress-strain curves determined experimentally and readily be used to predict strain-rate effects on the macroscopic responses with the availability of the material parameters at a certain strain rate, which offer new insights into understanding the actual deformation mechanism in amorphous solids. © 2009 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/129266
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China50725104
973 program2007CB613903
program of Introducing Talents of Discipline to UniversitiesB07003
Funding Information:

This research was supported in part by National Natural Science Foundation of China (Grant No. 50725104), the 973 program (Grant No. 2007CB613903), and the program of Introducing Talents of Discipline to Universities (Project No. B07003). Thanks are due to Dr. A. D. Drozdov at Ben-Gurion University of the Negev, Israel, for fruitful discussion on the modeling work.

References

 

DC FieldValueLanguage
dc.contributor.authorWu, Yen_HK
dc.contributor.authorChen, GLen_HK
dc.contributor.authorHui, XDen_HK
dc.contributor.authorLiu, CTen_HK
dc.contributor.authorLin, Yen_HK
dc.contributor.authorShang, XCen_HK
dc.contributor.authorLu, ZPen_HK
dc.date.accessioned2010-12-23T08:34:25Z-
dc.date.available2010-12-23T08:34:25Z-
dc.date.issued2009en_HK
dc.identifier.citationJournal Of Applied Physics, 2009, v. 106 n. 8en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/129266-
dc.description.abstractBased on mechanical instability of individual shear transformation zones (STZs), a quantitative link between the microplastic instability and macroscopic deformation behavior of metallic glasses was proposed. Our analysis confirms that macroscopic metallic glasses comprise a statistical distribution of STZ embryos with distributed values of activation energy, and the microplastic instability of all the individual STZs dictates the macroscopic deformation behavior of amorphous solids. The statistical model presented in this paper can successfully reproduce the macroscopic stress-strain curves determined experimentally and readily be used to predict strain-rate effects on the macroscopic responses with the availability of the material parameters at a certain strain rate, which offer new insights into understanding the actual deformation mechanism in amorphous solids. © 2009 American Institute of Physics.en_HK
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of Applied Physics. Copyright © American Institute of Physics.-
dc.rightsCopyright (2009) 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 following article appeared in (Journal of Applied Physics, 2009, v. 106 n. 8, article no. 083512) and may be found at (http://link.aip.org/link/doi/10.1063/1.3247968).-
dc.subjectAmorphous solids-
dc.subjectDeformation mechanism-
dc.subjectMacroscopic deformations-
dc.subjectMacroscopic response-
dc.subjectMacroscopic stress-
dc.titleA quantitative link between microplastic instability and macroscopic deformation behaviors in metallic glassesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=106&issue=8, article no. 083512&spage=&epage=&date=2009&atitle=A+quantitative+link+between+microplastic+instability+and+macroscopic+deformation+behaviors+in+metallic+glasses-
dc.identifier.emailLin, Y:ylin@hku.hken_HK
dc.identifier.authorityLin, Y=rp00080en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1063/1.3247968en_HK
dc.identifier.scopuseid_2-s2.0-70350735774en_HK
dc.identifier.hkuros178077en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70350735774&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume106en_HK
dc.identifier.issue8en_HK
dc.identifier.isiWOS:000271358100034-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWu, Y=7406896627en_HK
dc.identifier.scopusauthoridChen, GL=7407478838en_HK
dc.identifier.scopusauthoridHui, XD=25925133500en_HK
dc.identifier.scopusauthoridLiu, CT=8690267700en_HK
dc.identifier.scopusauthoridLin, Y=7406585339en_HK
dc.identifier.scopusauthoridShang, XC=22935731500en_HK
dc.identifier.scopusauthoridLu, ZP=7404768684en_HK

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