Three-Dimensional Atomic Structure of Grain Boundaries Resolved by Atomic-Resolution Electron Tomography

doi:10.1016/j.matt.2020.09.003

IMR OpenIR

	Three-Dimensional Atomic Structure of Grain Boundaries Resolved by Atomic-Resolution Electron Tomography
	Wang, Chunyang; Duan, Huichao; Chen, Chunjin; Wu, Peng; Qi, Dongqing; Ye, Hengqiang; Jin, Hai-Jun; Xin, Huolin L.; Du, Kui
	2020-12-02
发表期刊	MATTER
卷号	3 期号:6 页码:1999-2011
摘要	Grain boundaries (GBs) determine the properties of polycrystals, and tailoring the GB structure offers a promising method for the discovery and engineering of new materials. However, GB structures are far from well understood because of their structural complexity and limitations of conventional projection imaging methods. Here, we decipher three-dimensional atomic structure and crystallography of GBs in nanometals using atomic-resolution electron tomography. Unlike conventional descriptions, whereby they are either straight or curved planar planes with one-dimensional translational symmetry, we show that the high-angle GBs completely lose translational symmetry due to undulated curvature related to configurations of structural units. Moreover, we directly visualize kinks and jogs at the single-atom scale in dislocation-type GBs and investigate their mobilities. Our findings bring new insights to the conventional wisdom of GBs and show the importance of developing methods to include the non-planar nature of GBs to statistically evaluate the behavior of GBs in modeling studies.
DOI	10.1016/j.matt.2020.09.003
WOS记录号	WOS:000598228500001
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155649
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Wang, Chunyang,Duan, Huichao,Chen, Chunjin,et al. Three-Dimensional Atomic Structure of Grain Boundaries Resolved by Atomic-Resolution Electron Tomography[J]. MATTER,2020,3(6):1999-2011.
APA	Wang, Chunyang.,Duan, Huichao.,Chen, Chunjin.,Wu, Peng.,Qi, Dongqing.,...&Du, Kui.(2020).Three-Dimensional Atomic Structure of Grain Boundaries Resolved by Atomic-Resolution Electron Tomography.MATTER,3(6),1999-2011.
MLA	Wang, Chunyang,et al."Three-Dimensional Atomic Structure of Grain Boundaries Resolved by Atomic-Resolution Electron Tomography".MATTER 3.6(2020):1999-2011.