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In-situ observation of dislocation dynamics near heterostructured interfaces
Zhou H; Huang CX; Sha XC; Xiao LR; Ma XL; Hoeppel HW; Goeken M; Wu XL(武晓雷); Ameyama K; Han XD; Zhu YT
Corresponding AuthorHan, Xiaodong(xdhan@bjut.edu.cn) ; Zhu, Yuntian(ytzhu@ncsu.edu)
Source PublicationMATERIALS RESEARCH LETTERS
2019
Volume7Issue:9Pages:376-382
ISSN2166-3831
AbstractThere has been a long-standing controversy on how dislocations interact with interfaces. Here we report in-situ observations that in a Cu-brass heterostructured TEM film Frank-Read sources are the primary dislocation sources. They were dynamically formed and deactivated throughout the deformation in grain interior, which has never been reported before. This observation indicates that strain gradient near interfaces cannot be quantitatively related to the density gradient of geometrically necessary dislocations, and it was primarily produced by Frank-Read source gradient instead of dislocation pile-ups. These findings provide new insights on how to design heterostructured interfaces to enhance mechanical properties. [GRAPHICS]
KeywordHeterostructured materials deformation mechanism Frank-Read source in-situ TEM
DOI10.1080/21663831.2019.1616330
Indexed BySCI
Language英语
WOS IDWOS:000471551600005
WOS KeywordPLASTIC-DEFORMATION ; GRAIN ROTATION ; NANOCRYSTALLINE ; MECHANISMS ; DUCTILITY ; BOUNDARY ; STRENGTH ; SLIP
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding ProjectNational Key R&D Program of China[2017YFB0204403] ; National Natural Science Foundation of China[51601003] ; National Natural Science Foundation of China[11672195] ; Fundamental Research Funds for the Central Universities[30918011342] ; Fundamental Research Funds for the Central Universities[30919011412] ; Sichuan Youth Science and Technology Foundation[2016JQ0047] ; US Army Research Office ; Materials Characterization and Research Center of Nanjing University of Science and Technology ; Jiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Sichuan Youth Science and Technology Foundation ; US Army Research Office ; Materials Characterization and Research Center of Nanjing University of Science and Technology ; Jiangsu Key Laboratory of Advanced Micro & Nano Materials and Technology
Classification一类
Ranking5+
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79368
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Zhou H,Huang CX,Sha XC,et al. In-situ observation of dislocation dynamics near heterostructured interfaces[J]. MATERIALS RESEARCH LETTERS,2019,7(9):376-382.
APA Zhou H.,Huang CX.,Sha XC.,Xiao LR.,Ma XL.,...&Zhu YT.(2019).In-situ observation of dislocation dynamics near heterostructured interfaces.MATERIALS RESEARCH LETTERS,7(9),376-382.
MLA Zhou H,et al."In-situ observation of dislocation dynamics near heterostructured interfaces".MATERIALS RESEARCH LETTERS 7.9(2019):376-382.
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