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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 120 | - |
dc.citation.startPage | 108 | - |
dc.citation.title | INTERNATIONAL JOURNAL OF PLASTICITY | - |
dc.citation.volume | 109 | - |
dc.contributor.author | Kang, Na-Ri | - |
dc.contributor.author | Gwak, Eun-Ji | - |
dc.contributor.author | Jeon, Hansol | - |
dc.contributor.author | Song, Eunji | - |
dc.contributor.author | Kim, Ju-Young | - |
dc.date.accessioned | 2023-12-21T20:11:07Z | - |
dc.date.available | 2023-12-21T20:11:07Z | - |
dc.date.created | 2018-06-13 | - |
dc.date.issued | 2018-10 | - |
dc.description.abstract | Annealed, prestrained, and ball-milled nanoporous gold (np-Au) samples were prepared. Since the microstructures of the precursor alloys, such as the crystallographic orientation and grain size, were mostly preserved during the dealloying process, prestrained np-Au is believed to have higher initial dislocation density, and ball-milled np-Au is believed to have higher densities of initial dislocation and grain boundary comparing to annealed np-Au. The time-dependent deformation behavior of np-Au samples with various microstructures was characterized with two parameters; creep strain exponent n and activation volume V∗ using spherical nanoindentation creep tests. We found that primary mechanism of time-dependent plasticity for annealed and prestrained np-Au samples is dislocation slip and that for ball-milled np-Au sample is grain boundary sliding. In dislocation slip-dominant time-dependent deformation in np-Au, a higher initial dislocation density lowers n and V∗. In grain boundary sliding-dominant time-dependent deformation in np-Au, the values of n and V∗ are similar to those for dislocation slip-dominant time-dependent deformation; however, the creep strain rate in quasi-steady-state is higher than that for dislocation slip-dominant time-dependent deformation. | - |
dc.identifier.bibliographicCitation | INTERNATIONAL JOURNAL OF PLASTICITY, v.109, pp.108 - 120 | - |
dc.identifier.doi | 10.1016/j.ijplas.2018.05.011 | - |
dc.identifier.issn | 0749-6419 | - |
dc.identifier.scopusid | 2-s2.0-85047661615 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/24216 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0749641918301098?via%3Dihub | - |
dc.identifier.wosid | 000447111500007 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Microstructural effect on time-dependent plasticity of nanoporous gold | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics | - |
dc.relation.journalResearchArea | Engineering; Materials Science; Mechanics | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Creep | - |
dc.subject.keywordAuthor | Dislocation | - |
dc.subject.keywordAuthor | Grain boundaries | - |
dc.subject.keywordAuthor | Porous material | - |
dc.subject.keywordAuthor | Microstructures | - |
dc.subject.keywordPlus | STRAIN-RATE SENSITIVITY | - |
dc.subject.keywordPlus | SPHERICAL NANOINDENTATION | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | CATALYTIC-ACTIVITY | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
dc.subject.keywordPlus | YIELD STRENGTH | - |
dc.subject.keywordPlus | CREEP-BEHAVIOR | - |
dc.subject.keywordPlus | SIZE | - |
dc.subject.keywordPlus | INDENTATION | - |
dc.subject.keywordPlus | NANOCRYSTALLINE | - |
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