Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/146522
Full metadata record
DC FieldValueLanguage
dc.contributor.authorYin, Shengen_US
dc.contributor.authorCheng, Guangmingen_US
dc.contributor.authorZhu, Yongen_US
dc.contributor.authorGao, Huajianen_US
dc.date.accessioned2021-02-23T06:26:29Z-
dc.date.available2021-02-23T06:26:29Z-
dc.date.issued2020-
dc.identifier.citationYin, S., Cheng, G., Zhu, Y., & Gao, H. (2020). Competition between shear localization and tensile detwinning in twinned nanowires. Physical Review Materials, 4(2), 023603-. doi:10.1103/physrevmaterials.4.023603en_US
dc.identifier.issn2475-9953en_US
dc.identifier.urihttps://hdl.handle.net/10356/146522-
dc.description.abstractRecently, a transition of deformation mechanism from localized dislocation slip to delocalized plasticity via an anomalous tensile detwinning mechanism has been discovered in bitwinned metallic nanowires (NWs) with a single twin boundary (TB) running parallel to the NW length. However, experiments showed that the anomalous tensile detwinning in most of bitwinned NWs does not propagate through the whole NW, which limits the NWs failure strain when compared to the twinning-induced superplasticity in single-crystalline NWs. An elusive but fundamentally important question is that what factors might affect the propagation of tensile detwinning in such bitwinned NWs. In addition, can this tensile detwinning mechanism be applied to other types of twinned NWs? Here, based on in situ transmission electron microscopy testing and molecular dynamics simulations, a competition between shear localization and tensile detwinning is identified. By dividing the tensile detwinning mechanism into two steps and investigating each step separately, it is found that the quality of a single-crystalline embryo formed during step one determines the succeeding detwinning propagation (step two) and the final plastic strain. Furthermore, this anomalous tensile detwinning mechanism is extended to other metallic NWs with multiple TBs running parallel to the length direction, such as asymmetric pentatwinned NWs and NWs with multiple parallel TBs. This work highlights the important role of detwinning in large plasticity in metallic NWs with different twin structures.en_US
dc.language.isoenen_US
dc.relation.ispartofPhysical Review Materialsen_US
dc.rights© 2020 American Physical Society (APS). All rights reserved. This paper was published in Physical Review Materials and is made available with permission of American Physical Society (APS).en_US
dc.subjectScience::Physicsen_US
dc.titleCompetition between shear localization and tensile detwinning in twinned nanowiresen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.identifier.doi10.1103/PhysRevMaterials.4.023603-
dc.description.versionPublished versionen_US
dc.identifier.scopus2-s2.0-85082736379-
dc.identifier.issue2en_US
dc.identifier.volume4en_US
dc.subject.keywordsDuctilityen_US
dc.subject.keywordsFractureen_US
item.fulltextWith Fulltext-
item.grantfulltextopen-
Appears in Collections:MAE Journal Articles
Files in This Item:
File Description SizeFormat 
PhysRevMaterials.4.023603.pdf9.45 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 50

7
Updated on Mar 25, 2024

Web of ScienceTM
Citations 50

5
Updated on Oct 24, 2023

Page view(s)

196
Updated on Mar 27, 2024

Download(s) 50

109
Updated on Mar 27, 2024

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.