Enhanced deformation-induced FCC-HCP transformation of a metastable high-entropy alloy induced by a smaller grain size
DC Field | Value | Language |
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dc.contributor.author | Ock, Il-Seob | - |
dc.contributor.author | Kim, Jin-Seob | - |
dc.contributor.author | Kim, Jin-Kyung | - |
dc.date.accessioned | 2024-06-19T08:00:25Z | - |
dc.date.available | 2024-06-19T08:00:25Z | - |
dc.date.issued | 2024-06 | - |
dc.identifier.issn | 0921-5093 | - |
dc.identifier.issn | 1873-4936 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/119527 | - |
dc.description.abstract | This study reports the grain-size-dependent deformation-induced face-centered cubic (FCC)-hexagonal closepacked (HCP) transformation behavior of Fe49.5Mn30Co10Cr10C0.2Ti0.1V0.1Mo0.1 (at. %) high-entropy alloy in the medium grain size range (10-20 mu m), their mechanical properties, and deformation mechanisms. The materials annealed at 900 degrees C for 1 h (A900-1) and 10 h (A900-10) showed a fully FCC, recrystallized microstructure with a larger grain size in the latter owing to grain growth during annealing. The A900-1 sample exhibited a larger strength-ductility balance and a higher strain hardening rate than the A900-10 sample. The A900-1 sample, with a larger number of grain boundary nucleation sites of the deformation-induced HCP phase, exhibited a higher HCP transformation rate than the A900-10 sample in the early stage of deformation below 10 % strain, whereas both materials showed similar HCP transformation rates at strain levels higher than 30 %. The emission of deformation-induced HCP plates in both neighboring grains from the same grain boundary (A900-1) and the activation of the deformation-induced HCP phase in a single grain and only dislocations in the neighboring grains (A900-10) suggest the importance of grain boundary stress in the observed phenomena. The observed additional mechanisms other than dislocation slip and deformation-induced HCP phase, that is, reverse FCC-HCP transformation, HCP {1012} twinning, and kink banding, could contribute to deformation accommodation and stress relaxation, thereby leading to the excellent ductility of the investigated materials. | - |
dc.format.extent | 10 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier BV | - |
dc.title | Enhanced deformation-induced FCC-HCP transformation of a metastable high-entropy alloy induced by a smaller grain size | - |
dc.type | Article | - |
dc.publisher.location | 스위스 | - |
dc.identifier.doi | 10.1016/j.msea.2024.146610 | - |
dc.identifier.scopusid | 2-s2.0-85192831122 | - |
dc.identifier.wosid | 001240729100001 | - |
dc.identifier.bibliographicCitation | Materials Science and Engineering: A, v.902, pp 1 - 10 | - |
dc.citation.title | Materials Science and Engineering: A | - |
dc.citation.volume | 902 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 10 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | MECHANISMS | - |
dc.subject.keywordPlus | NUCLEATION | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | PLASTICITY | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordAuthor | High-entropy alloy | - |
dc.subject.keywordAuthor | Deformation-induced HCP phase | - |
dc.subject.keywordAuthor | TRIP | - |
dc.subject.keywordAuthor | Grain boundary stress | - |
dc.subject.keywordAuthor | Deformation mechanism | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0921509324005410?via%3Dihub | - |
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