Atomic segregation at twin boundaries in a Mg-Ag alloy

doi:10.1016/j.scriptamat.2019.11.025

IMECH-IR > 非线性力学国家重点实验室

	Atomic segregation at twin boundaries in a Mg-Ag alloy
	Chen XF(陈雪飞)1,2; Xiao LR 3; Ding ZG 3; Liu W 3; Zhu YT 3,4; Wu XL(武晓雷)1,2
通讯作者	Ding, Z. G.(zhigangding@njust.edu.cn) ; Wu, X. L.(xlwu@imech.ac.cn)
发表期刊	SCRIPTA MATERIALIA
	2020-03-01
卷号	178 页码:193-197
ISSN	1359-6462
摘要	Segregation of solute atoms at twin boundaries (TBs) plays a critical role in mechanical properties and thermal stability of magnesium alloys. Here, segregation structures at {10 (1) over bar1}, {10 (1) over bar2} and {10 (1) over bar3} TBs are characterized in a Mg-Ag alloy by means of the atomic resolution high-angle annular dark-field technique based on scanning transmission electron microscopy. Of particular finding is the unique complex segregation at {10 (1) over bar3} TBs, where Ag atoms occupy both substitutional and interstitial sites. By contrast, Ag atoms only substitutionally segregate at {10 (1) over bar1} and {10 (1) over bar2} TBs. Calculation simulation of segregation energy and three-dimensional structure of TBs helps understanding of hybrid segregation. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	Segregation Twin boundary Magnesium alloy HAADF-STEM
DOI	10.1016/j.scriptamat.2019.11.025
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000510947200038
关键词[WOS]	INTERFACIAL SEGREGATION ; DEFORMATION ; MECHANISM ; PHASE
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助项目	National Key Research and Development Program of China[2017YFA0204402] ; National Natural Science Foundation of China[51601003] ; National Natural Science Foundation of China[11672323] ; National Natural Science Foundation of China[11572328] ; National Natural Science Foundation of China[51901103] ; National Natural Science Foundation of China[51601204] ; Fundamental Research Funds for the Central Universities[30918011342] ; U.S. Army Research Office[W911 NF-17-1-0350]
项目资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; U.S. Army Research Office
论文分区	一类
力学所作者排名	1
RpAuthor	Ding, Z. G. ; Wu, X. L.
引用统计	被引频次：37[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/311007/81542
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nano & Heterogeneous Mat Ctr, Nanjing 210094, Peoples R China; 4.North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA
推荐引用方式 GB/T 7714	Chen XF,Xiao LR,Ding ZG,et al. Atomic segregation at twin boundaries in a Mg-Ag alloy[J]. SCRIPTA MATERIALIA,2020,178:193-197.
APA	陈雪飞,Xiao LR,Ding ZG,Liu W,Zhu YT,&武晓雷.(2020).Atomic segregation at twin boundaries in a Mg-Ag alloy.SCRIPTA MATERIALIA,178,193-197.
MLA	陈雪飞,et al."Atomic segregation at twin boundaries in a Mg-Ag alloy".SCRIPTA MATERIALIA 178(2020):193-197.

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