In-situ observation of dislocation dynamics near heterostructured interfaces

doi:10.1080/21663831.2019.1616330

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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
通讯作者	Han, Xiaodong(xdhan@bjut.edu.cn) ; Zhu, Yuntian(ytzhu@ncsu.edu)
发表期刊	MATERIALS RESEARCH LETTERS
	2019
卷号	7 期号:9 页码:376-382
ISSN	2166-3831
摘要	There 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]
关键词	Heterostructured materials deformation mechanism Frank-Read source in-situ TEM
DOI	10.1080/21663831.2019.1616330
收录类别	SCI
语种	英语
WOS记录号	WOS:000471551600005
关键词[WOS]	PLASTIC-DEFORMATION ; GRAIN ROTATION ; NANOCRYSTALLINE ; MECHANISMS ; DUCTILITY ; BOUNDARY ; STRENGTH ; SLIP
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
资助项目	National 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
项目资助者	National 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
论文分区	一类
力学所作者排名	5+
RpAuthor	Han, Xiaodong ; Zhu, Yuntian
引用统计	被引频次：94[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/79367
专题	非线性力学国家重点实验室
推荐引用方式 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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