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Partial dislocation in carbon-vacancy-ordered Nb(12)A(13)C(8)
Zhang, H; Wang, XH; Wu, ED; Zhou, YC; Wang, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.; Zhou, YC (reprint author), Aerosp Res Inst Mat & Proc Technol, Sci & Technol Adv Funct Composite Lab, Beijing 100076, Peoples R China.
2018-03-01
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume145Pages:85-89
AbstractBasal dislocations in nanolaminated machinable ternary carbides and nitrides (also known as MAX phases) have been postulated to be the result of shearing M-A bonds, but have not been microscopically confirmed yet. This study on dislocations and stacking faults in C-vacancy-ordered Nb(12)A(13)C(8) demonstrates that the basal dislocation core lies between NbC slabs, verifying the shear of Nb-Al bonds. The formation of observed 1/3 < 01 (1) over bar0 > type partial dislocations therefore does not give rise to stacking faults. The frequently observed stacking faults are special intergrowth structures of atomically thin NbC slabs embedded in the Nb(12)A(13)C(8) grain. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; Basal dislocations in nanolaminated machinable ternary carbides and nitrides (also known as MAX phases) have been postulated to be the result of shearing M-A bonds, but have not been microscopically confirmed yet. This study on dislocations and stacking faults in C-vacancy-ordered Nb(12)A(13)C(8) demonstrates that the basal dislocation core lies between NbC slabs, verifying the shear of Nb-Al bonds. The formation of observed 1/3 < 01 (1) over bar0 > type partial dislocations therefore does not give rise to stacking faults. The frequently observed stacking faults are special intergrowth structures of atomically thin NbC slabs embedded in the Nb(12)A(13)C(8) grain. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[zhang, hui ; wang, xiaohui ; wu, erdong] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [zhou, yanchun] aerosp res inst mat & proc technol, sci & technol adv funct composite lab, beijing 100076, peoples r china
KeywordTransmission Electron-microscopy Temperature Solution Growth Transition-metal Carbides Max Phases Room-temperature m(n+1)Ax(n) Phases Grain-boundaries Single-crystals Stacking-faults Ti3sic2
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationYouth Innovation Promotion Association, Chinese Academy of Sciences [2011152]; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79478
Collection中国科学院金属研究所
Corresponding AuthorWang, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.; Zhou, YC (reprint author), Aerosp Res Inst Mat & Proc Technol, Sci & Technol Adv Funct Composite Lab, Beijing 100076, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, H,Wang, XH,Wu, ED,et al. Partial dislocation in carbon-vacancy-ordered Nb(12)A(13)C(8)[J]. SCRIPTA MATERIALIA,2018,145:85-89.
APA Zhang, H,Wang, XH,Wu, ED,Zhou, YC,Wang, XH ,&Zhou, YC .(2018).Partial dislocation in carbon-vacancy-ordered Nb(12)A(13)C(8).SCRIPTA MATERIALIA,145,85-89.
MLA Zhang, H,et al."Partial dislocation in carbon-vacancy-ordered Nb(12)A(13)C(8)".SCRIPTA MATERIALIA 145(2018):85-89.
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