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High-resolution transmission electron microscopy study on reversion of Al2CuMg precipitates in Al-Cu-Mg alloys under irradiation
Zhao, Y. L.; Hu, W. W.; Yang, Z. Q.; yangzq@imr.ac.cn
2015
Source PublicationMICRON
ISSN0968-4328
Volume76Pages:1-5
AbstractImage deconvolution analyses showed that reversion of S-Al2CuMg precipitates occurred in an Al-Cu-Mg alloy during high-resolution transmission electron microscopy observations. A fraction of Mg and Cu atoms in the precipitates diffused into Al matrix due to electron beam irradiation at 300 kV, resulting in structural/chemical reversion of the precipitates. The structural reversion of the S-Al2CuMg precipitates is closely related with irradiation-induced displacement of atoms. The strong attraction between Cu and Mg atoms might assist the sub-threshold displacement of Cu atoms. One transitional structure is determined to be S ''-Al10Cu3Mg3, a precursor of S-Al2CuMg. Two other transitional structures, Al3CuMg and Al18Cu5Mg5 which have the same lattice parameters of a= c= 0.405 nm as that of S ''-Al10Cu3Mg3, but different b values, are suggested. (C) 2015 Elsevier Ltd. All rights reserved.
description.department[zhao, y. l. ; hu, w. w. ; yang, z. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [zhao, y. l.] liaoning tech coll equipment mfg, shenyang 110161, peoples r china
KeywordQuantitative Hrtem Al Alloy Precipitate Irradiation Structural Reversion
Funding OrganizationNational Natural Science Foundation of China [51171189, 51371178, 51390473]; Liaoning Province
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74892
Collection中国科学院金属研究所
Corresponding Authoryangzq@imr.ac.cn
Recommended Citation
GB/T 7714
Zhao, Y. L.,Hu, W. W.,Yang, Z. Q.,et al. High-resolution transmission electron microscopy study on reversion of Al2CuMg precipitates in Al-Cu-Mg alloys under irradiation[J]. MICRON,2015,76:1-5.
APA Zhao, Y. L.,Hu, W. W.,Yang, Z. Q.,&yangzq@imr.ac.cn.(2015).High-resolution transmission electron microscopy study on reversion of Al2CuMg precipitates in Al-Cu-Mg alloys under irradiation.MICRON,76,1-5.
MLA Zhao, Y. L.,et al."High-resolution transmission electron microscopy study on reversion of Al2CuMg precipitates in Al-Cu-Mg alloys under irradiation".MICRON 76(2015):1-5.
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