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Direct measurement of precipitate induced strain in an Al-Zn-Mg-Cu alloy with aberration corrected transmission electron microscopy
Ying, XR; Du, YX; Song, M; Lu, N; Ye, HQ; Song, M (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2016-11-01
Source PublicationMICRON
ISSN0968-4328
Volume90Pages:18-22
AbstractPrecipitates and their associated strain fields significantly influence mechanical properties and, consequently, the industrial performance of aluminum alloys. In this work, we present a direct measurement of strains induced by eta' and eta precipitates in an Al-Zn-Mg-Cu alloy using aberration-corrected high resolution transmission electron microscopy and quantitative strain analysis. The results demonstrate that the strain induced by precipitates in the Al-Zn-Mg-Cu alloy shows significant tensile strains perpendicular to the longitudinal direction of the precipitate discs on the side of the discs and along the longitudinal direction at both ends of the eta' and eta precipitates. This strain field can be described by an equivalent dislocation model, in which the lattice mismatch between the precipitate and the matrix is equivalent to a series of dislocation pairs along the precipitate/matrix interfaces. (C) 2016 Elsevier Ltd. All rights reserved.
description.department[ying, x. r. ; song, m. ; lu, n. ; ye, h. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [du, y. x.] northeast yucai sch, senior high sect, 41 century rd, shenyang 110179, peoples r china
KeywordAberration Corrected Electron Microscopy Quantitative Electron Microscopy Strain Analysis Precipitates Aluminum Alloys
Subject AreaMicroscopy
Funding OrganizationSpecial Funds for the Major State Basic Research Projects of China [2012CB619503]; Natural Sciences Foundation of China [51390473]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76202
Collection中国科学院金属研究所
Corresponding AuthorSong, M (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Ying, XR,Du, YX,Song, M,et al. Direct measurement of precipitate induced strain in an Al-Zn-Mg-Cu alloy with aberration corrected transmission electron microscopy[J]. MICRON,2016,90:18-22.
APA Ying, XR,Du, YX,Song, M,Lu, N,Ye, HQ,&Song, M .(2016).Direct measurement of precipitate induced strain in an Al-Zn-Mg-Cu alloy with aberration corrected transmission electron microscopy.MICRON,90,18-22.
MLA Ying, XR,et al."Direct measurement of precipitate induced strain in an Al-Zn-Mg-Cu alloy with aberration corrected transmission electron microscopy".MICRON 90(2016):18-22.
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