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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM
  • Insitu-TEM characterization of carbon-based materials using nanofactory STM holder for Li-ion battery application
  • Structural characterization of mesoporous materials using SEM & TEM
  • Interface analysis between various oxides and metals through Cs-corrected (S)TEM
  • Resistive switching mechanism of graphene oxide thin films for RRAM application

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Factors affecting the grain refinement of extruded Mg-6Zn-0.5Zr alloy by Ca addition

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dc.contributor.author Kim, Beomcheol ko
dc.contributor.author Hong, Chang Hee ko
dc.contributor.author Kim, Jong Chan ko
dc.contributor.author Lee, Si-Young ko
dc.contributor.author Baek, Soo-Min ko
dc.contributor.author Jeong, Hu Young ko
dc.contributor.author Park, Sung Soo ko
dc.date.available 2020-08-21T00:52:35Z -
dc.date.created 2020-08-10 ko
dc.date.issued 2020-10 ko
dc.identifier.citation SCRIPTA MATERIALIA, v.187, pp.24 - 29 ko
dc.identifier.issn 1359-6462 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/47554 -
dc.description.abstract We report that the grain size of an extruded Mg-6Zn-0.5Zr alloy is significantly reduced by the addition of Ca. The grain size was reduced from 4.2 to 1.6 mu m by the addition of 0.2 wt% Ca, leading to an increase in the yield strength to as high as 65 MPa. Microstructural analysis indicated that adding Ca to the alloy results in the co-presence of MgZn2 and Ca2Mg6Zn3 particles within the alpha-Mg matrix and the co-segregation of Zn and Ca at the grain boundaries. The factors responsible for such remarkable changes in the microstructure and tensile properties are also discussed. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. ko
dc.language 영어 ko
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD ko
dc.title Factors affecting the grain refinement of extruded Mg-6Zn-0.5Zr alloy by Ca addition ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85086375323 ko
dc.identifier.wosid 000551272900006 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.scriptamat.2020.06.001 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S1359646220303481?via%3Dihub ko
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