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Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals
Li, P.; Li, S. X.; Wang, Z. G.; Zhang, Z. F.
Corresponding AuthorLi, P.(pli@imr.ac.cn)
2010-05-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume58Issue:9Pages:3281-3294
AbstractThis work reveals the formation mechanisms of saturation dislocation patterns in three typical multiple-slip oriented [0 0 1], [0 1 1] and [(1) over bar 1 1] copper single crystals. Compared with the single-slip oriented copper single crystals, the three multiple-slip oriented ones show very different dislocation patterns. It was found that the dislocation patterns in cyclically saturated copper single crystals are the Labyrinth structure for [0 0 1], wall structure for [0 1 1] and cell structure for [(1) over bar 1 1] , respectively. Based on a two-phase structure consisting of persistent slip bands and veins for single-slip orientation, the formation mechanisms of the dislocation patterns in multiple-slip oriented crystals are proposed as follows: the formation of the complex dislocation patterns depends on the activating slip system. The easy operation of the critical secondary slip system will contribute to the formation of the Labyrinth structure. The activation of the coplanar secondary slip system will be beneficial to formation of the cell structure. If no secondary slip system is activated, the wall structure is more prone to appear. Finally, the intrinsic relationship between various dislocation patterns and face centered cubic crystal structure was established. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordOrientation effect Cyclic deformation Copper single crystals Dislocation patterns
Funding OrganizationNational Outstanding Young Scientist Foundation ; National Natural Science Foundation of China ; National Basic Research Program of China
DOI10.1016/j.actamat.2010.02.002
Indexed BySCI
Language英语
Funding ProjectNational Outstanding Young Scientist Foundation[50625103] ; National Natural Science Foundation of China[50890173] ; National Basic Research Program of China[2010CB631006]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000277747400010
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/99666
Collection中国科学院金属研究所
Corresponding AuthorLi, P.
AffiliationChinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li, P.,Li, S. X.,Wang, Z. G.,et al. Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals[J]. ACTA MATERIALIA,2010,58(9):3281-3294.
APA Li, P.,Li, S. X.,Wang, Z. G.,&Zhang, Z. F..(2010).Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals.ACTA MATERIALIA,58(9),3281-3294.
MLA Li, P.,et al."Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals".ACTA MATERIALIA 58.9(2010):3281-3294.
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