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dc.contributor.author김진경-
dc.date.accessioned2019-02-26T05:57:11Z-
dc.date.available2019-02-26T05:57:11Z-
dc.date.issued2017-12-
dc.identifier.citationACTA MATERIALIA, v. 141, Page. 444-455en_US
dc.identifier.issn1359-6454-
dc.identifier.issn1873-2453-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1359645417308091-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/99222-
dc.description.abstractDeformation twinning in coarse-grained fcc metals results from the highly coordinated glide of Shockley partial dislocations with the same Burgers vector on successive {111}-type twinning planes. The main issue of the formation mechanism of deformation twinning is how the arrangement of Shockley partials required for twinning evolves. Here, we present the deformation twinning mechanism that operates in Fe-17Mn-0.45C-1.5Al-1Si TWIP steel by means of in-situ TEM deformation tests and post-mortem TEM characterization. The in-situ TEM observation shows the formation of a thin twin by Shockley partial dislocations generated in a grain boundary, which indicates the nucleation of deformation twins at grain boundary defect sites. The observed twinning process is similar to deformation twinning in nano crystalline materials through successive emission of partial dislocations from grain boundaries. In addition, a high density of Frank partial dislocations is observed inside deformations twins. These defects affect the growth of deformation twins and could contribute to the high work hardening of TWIP steel. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipThe authors gratefully acknowledge the support of POSCO Technical Research Laboratories, Gwangyang, Korea. The authors also wish to thank Mr. Hojun Gwon (GIFT, POSTECH) for his technical support and expertise.en_US
dc.language.isoen_USen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.subjectIn-situ transmission electron microscopyen_US
dc.subjectDeformation twinningen_US
dc.subjectTWIP steelen_US
dc.subjectShockley partial dislocationen_US
dc.subjectFrank partial dislocationen_US
dc.titleOn the deformation twinning mechanisms in twinning-induced plasticity steelen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.actamat.2017.09.043-
dc.relation.journalACTA MATERIALIA-
dc.contributor.googleauthorKim, Jin-Kyung-
dc.contributor.googleauthorKwon, Min-Hyeok-
dc.contributor.googleauthorDe Cooman, Bruno C.-
dc.relation.code2017002884-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING-
dc.identifier.pidjinkyungkim-
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COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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