DC Field | Value | Language |
---|---|---|
dc.contributor.author | JO, YONGHEE | - |
dc.contributor.author | CHOI, WON MI | - |
dc.contributor.author | KIM, DONGGEUN | - |
dc.contributor.author | ZARGARAN, ALIREZA | - |
dc.contributor.author | SOHN, SEOK SU | - |
dc.contributor.author | KIM, HYOUNG SEOP | - |
dc.contributor.author | LEE, BYEONG JOO | - |
dc.contributor.author | KIM, NACK JOON | - |
dc.contributor.author | LEE, SUNG HAK | - |
dc.date.accessioned | 2019-07-08T02:10:04Z | - |
dc.date.available | 2019-07-08T02:10:04Z | - |
dc.date.created | 2019-06-30 | - |
dc.date.issued | 2019-01 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/99338 | - |
dc.description.abstract | We introduce a novel transformation-induced plasticity mechanism, i.e., a martensitic transformation from fcc phase to bcc phase, in medium-entropy alloys (MEAs). A VCrFeCoNi MEA system is designed by thermodynamic calculations in consideration of phase stability between bcc and fcc phases. The resultantly formed bcc martensite favorably contributes to the transformation-induced plasticity, thereby leading to a significant enhancement in both strength and ductility as well as strain hardening. We reveal the microstructural evolutions according to the Co-Ni balance and their contributions to a mechanical response. The Co-Ni balance plays a leading role in phase stability and consequently tunes the cryogenic-temperature strength-ductility balance. The main difference from recently-reported metastable high-entropy dual-phase alloys is the formation of bcc martensite as a daughter phase, which shows significant effects on strain hardening. The hcp phase in the present MEA mostly acts as a nucleation site for the bcc martensite. Our findings demonstrate that the fcc to bcc transformation can be an attractive route to a new MEA design strategy for improving cryogenic strength-ductility. | - |
dc.language | English | - |
dc.publisher | Nature Publishing Group | - |
dc.relation.isPartOf | Scientific Reports | - |
dc.title | FCC to BCC transformation-induced plasticity based on thermodynamic phase stability in novel V10Cr10Fe45CoxNi35-x medium-entropy alloys | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41598-019-39570-y | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Scientific Reports, v.9, no.1, pp.2948 | - |
dc.identifier.wosid | 000459799800097 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 2948 | - |
dc.citation.title | Scientific Reports | - |
dc.citation.volume | 9 | - |
dc.contributor.affiliatedAuthor | JO, YONGHEE | - |
dc.contributor.affiliatedAuthor | CHOI, WON MI | - |
dc.contributor.affiliatedAuthor | KIM, DONGGEUN | - |
dc.contributor.affiliatedAuthor | ZARGARAN, ALIREZA | - |
dc.contributor.affiliatedAuthor | SOHN, SEOK SU | - |
dc.contributor.affiliatedAuthor | KIM, HYOUNG SEOP | - |
dc.contributor.affiliatedAuthor | LEE, BYEONG JOO | - |
dc.contributor.affiliatedAuthor | KIM, NACK JOON | - |
dc.contributor.affiliatedAuthor | LEE, SUNG HAK | - |
dc.identifier.scopusid | 2-s2.0-85062297513 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | STACKING-FAULT ENERGY | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | MARTENSITIC-TRANSFORMATION | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | TENSILE | - |
dc.subject.keywordPlus | MN | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | DUCTILITY | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.