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Lee, Sukbin
Multidimensional Structural Materials Lab.
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dc.citation.endPage 351 -
dc.citation.startPage 340 -
dc.citation.title ACTA MATERIALIA -
dc.citation.volume 199 -
dc.contributor.author Jeon, Hansol -
dc.contributor.author Lee, Sukbin -
dc.contributor.author Kim, Ju-Young -
dc.date.accessioned 2023-12-21T16:50:04Z -
dc.date.available 2023-12-21T16:50:04Z -
dc.date.created 2020-10-29 -
dc.date.issued 2020-10 -
dc.description.abstract Tensile and compressive tests are carried out on four nanoporous gold samples with ligament sizes of 56, 149, 402, and 868 nm, all without grain boundaries and with similar number of ligaments regardless of ligament size. We find that tensile yield strengths are greater than compressive yield strengths up to ligament size of 402 nm, while yield strengths are similar in tension and compression for d(L) of 868 nm. The dependence of tensile yield strength on ligament size is described well using a size-effect exponent -1.18 for four samples, whereas bulk-like behavior, i.e. no ligament-size dependency, is observed for ligament size greater than 402 nm in compression; compressive yield strength depending on ligament size is described by a size-effect exponent -1.49 for ligament sizes ranging from 56 nm to 402 nm. The asymmetries in yield strength and plasticity between tension and compression are discussed in terms of the deformation behavior of individual ligaments based on a suggested open-cell model and dislocation activities in the ligaments. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. -
dc.identifier.bibliographicCitation ACTA MATERIALIA, v.199, pp.340 - 351 -
dc.identifier.doi 10.1016/j.actamat.2020.08.054 -
dc.identifier.issn 1359-6454 -
dc.identifier.scopusid 2-s2.0-85090040596 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/48682 -
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S1359645420306613 -
dc.identifier.wosid 000577997400003 -
dc.language 영어 -
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD -
dc.title Tension-compression asymmetry in plasticity of nanoporous gold -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering -
dc.relation.journalResearchArea Materials Science; Metallurgy & Metallurgical Engineering -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Nanoporous -
dc.subject.keywordAuthor Tension test -
dc.subject.keywordAuthor Compression test -
dc.subject.keywordAuthor Size effects -
dc.subject.keywordAuthor Tension-compression asymmetry -
dc.subject.keywordPlus MECHANICAL-PROPERTIES -
dc.subject.keywordPlus SCALING RELATIONS -
dc.subject.keywordPlus DEFORMATION MECHANISMS -
dc.subject.keywordPlus RATE SENSITIVITY -
dc.subject.keywordPlus YIELD STRENGTH -
dc.subject.keywordPlus SURFACE-ENERGY -
dc.subject.keywordPlus METALS -
dc.subject.keywordPlus EVOLUTION -
dc.subject.keywordPlus STRESS -
dc.subject.keywordPlus COPPER -

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