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Microscopic stresses in carbon nanotube reinforced aluminum matrix composites determined by in-situ neutron diffraction
Zhang, X. X.1; Zhang, J. F.1; Liu, Z. Y.1; Gan, W. M.2; Hofmann, M.3; Andrae, H.4; Xiao, B. L.1; Ma, Z. Y.1
Corresponding AuthorXiao, B. L.(blxiao@imr.ac.cn) ; Ma, Z. Y.(zyma@imr.ac.cn)
2020-10-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume54Pages:58-68
AbstractOne of the most desired strengthening mechanisms in the carbon nanotube reinforced aluminum matrix composites (CNT/Al) composites is the load transfer strengthening mechanism (LTSM). However, a fundamental issue concerning the LTSM is that quantitative measurements of load partitioning in these composites during loading are very limited. In this study, in-situ neutron diffraction study on the tensile deformation of the 3 vol.% CNT/2009Al composite and the unreinforced 2009Al alloy was conducted. The {311} and {220} diffraction elastic constants (DECs) of the 2009Al alloy were determined. Using those DECs the average stress in the 2009Al matrix of the composite was calculated. Then the average stress in the CNTs was separated by using the stress equilibrium condition. Computational homogenization models were also applied to explain the stress evolution in each phase. Predicted results agree with experimental data. In the present case, the average stress in the CNTs reaches 1630 MPa at the yield strength of the composite based on linear regression of the measured data, which leads to an increment of yield strength by about 37 MPa. As the result of this work, an approach to quantify load partitioning in the CNTs is developed for the CNT/Al composites, which can be applied to optimize the mechanical properties of the composites.(C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordCarbon nanotubes Aluminum matrix composites In-situ neutron diffraction Load partitioning
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS
DOI10.1016/j.jmst.2020.04.016
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51871214] ; National Natural Science Foundation of China[51931009] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC015]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000545310500007
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/139719
Collection中国科学院金属研究所
Corresponding AuthorXiao, B. L.; Ma, Z. Y.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Helmholtz Zentrum Geesthacht, German Engn Mat Sci Ctr MLZ, D-85747 Garching, Germany
3.Tech Univ Munich, Heinz Maier Leibnitz Zentrum MLZ, D-85747 Garching, Germany
4.Fraunhofer Inst Ind Math, Fraunhofer Pl 1, D-67663 Kaiserslautern, Germany
Recommended Citation
GB/T 7714
Zhang, X. X.,Zhang, J. F.,Liu, Z. Y.,et al. Microscopic stresses in carbon nanotube reinforced aluminum matrix composites determined by in-situ neutron diffraction[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,54:58-68.
APA Zhang, X. X..,Zhang, J. F..,Liu, Z. Y..,Gan, W. M..,Hofmann, M..,...&Ma, Z. Y..(2020).Microscopic stresses in carbon nanotube reinforced aluminum matrix composites determined by in-situ neutron diffraction.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,54,58-68.
MLA Zhang, X. X.,et al."Microscopic stresses in carbon nanotube reinforced aluminum matrix composites determined by in-situ neutron diffraction".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 54(2020):58-68.
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