Nonsymmetrical Segregation of Solutes in Periodic Misfit Dislocations Separated Tilt Grain Boundaries

doi:10.1021/acs.nanolett.0c05008

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	Nonsymmetrical Segregation of Solutes in Periodic Misfit Dislocations Separated Tilt Grain Boundaries
	Xie, Hongbo 4; Huang, Qiuyan 1; Bai, Junyuan 4; Li, Shanshan 4; Liu, Yang 1; Feng, Jianguang 1; Yang, Yuansheng 1; Pan, Hucheng 4; Li, Hongxiao 2; Ren, Yuping 2,3
刊名	NANO LETTERS
	2021-04-14
卷号	21 期号:7 页码:2870-2875
关键词	Interface segregation Misfit dislocation Tilt grain boundary Superstructure Magnesium alloy
ISSN号	1530-6984
DOI	10.1021/acs.nanolett.0c05008
通讯作者	Huang, Qiuyan(qyhuang16b@imr.ac.cn) ; Pan, Hucheng(panhc@atm.neu.edu.cn)
英文摘要	Interfacial segregation is ubiquitous in mulit-component polycrystalline materials and plays a decisive role in material properties. So far, the discovered solute segregation patterns at special high-symmetry interfaces are usually located at the boundary lines or are distributed symmetrically at the boundaries. Here, in a model Mg-Nd-Mn alloy, we confirm that elastic strain minimization facilitated nonsymmetrical segregation of solutes in four types of linear tilt grain boundaries (TGBs) to generate ordered interfacial superstructures. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy observations indicate that the solutes selectively segregate at substitutional sites at the linear TGBs separated by periodic misfit dislocations to form such two-dimensional planar structures. These findings are totally different from the classical McLean-type segregation which has assumed the monolayer or submonolayer coverage of a grain boundary and refresh understanding on strain-driven interface segregation behaviors.
资助项目	National Key Research and Development Program of China[2016YFB0701202] ; National Key Research and Development Program of China[2016YFB0301105] ; National Key Research and Development Program of China[2016YFB0701200] ; National Natural Science Foundation of China[51525101] ; National Natural Science Foundation of China[51971053] ; National Natural Science Foundation of China[U1610253] ; National Natural Science Foundation of China[51701211] ; Project of Promoting Talents in Liaoning Province[XLYC1808038] ; China Postdoctoral Science Foundation[2020M670774]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000641160500023
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Project of Promoting Talents in Liaoning Province ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161804]
专题	金属研究所_中国科学院金属研究所
通讯作者	Huang, Qiuyan; Pan, Hucheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China 3.Northeastern Univ, Res Ctr Met Wires, Shenyang 110819, Peoples R China 4.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Xie, Hongbo,Huang, Qiuyan,Bai, Junyuan,et al. Nonsymmetrical Segregation of Solutes in Periodic Misfit Dislocations Separated Tilt Grain Boundaries[J]. NANO LETTERS,2021,21(7):2870-2875.
APA	Xie, Hongbo.,Huang, Qiuyan.,Bai, Junyuan.,Li, Shanshan.,Liu, Yang.,...&Qin, Gaowu.(2021).Nonsymmetrical Segregation of Solutes in Periodic Misfit Dislocations Separated Tilt Grain Boundaries.NANO LETTERS,21(7),2870-2875.
MLA	Xie, Hongbo,et al."Nonsymmetrical Segregation of Solutes in Periodic Misfit Dislocations Separated Tilt Grain Boundaries".NANO LETTERS 21.7(2021):2870-2875.