Atomic segregation at twin boundaries in a Mg-Ag alloy

doi:10.1016/j.scriptamat.2019.11.025

CORC > 力学研究所 > 中国科学院力学研究所 > 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)3,4; Xiao LR 2; Ding ZG 2; Liu W 2; Zhu YT 1,2; Wu XL(武晓雷)3,4
刊名	SCRIPTA MATERIALIA
	2020-03-01
卷号	178 页码:193-197
关键词	Segregation Twin boundary Magnesium alloy HAADF-STEM
ISSN号	1359-6462
DOI	10.1016/j.scriptamat.2019.11.025
通讯作者	Ding, Z. G.(zhigangding@njust.edu.cn) ; Wu, X. L.(xlwu@imech.ac.cn)
英文摘要	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.
分类号	一类
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]
WOS关键词	INTERFACIAL SEGREGATION ; DEFORMATION ; MECHANISM ; PHASE
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000510947200038
资助机构	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
其他责任者	Ding, Z. G. ; Wu, X. L.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/81541]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA 2.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nano & Heterogeneous Mat Ctr, Nanjing 210094, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
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.