| 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 Author | Xiao, B. L.(blxiao@imr.ac.cn) ; Ma, Z. Y.(zyma@imr.ac.cn) |
| 2020-10-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 54Pages:58-68 |
| Abstract | One 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. |
| Keyword | Carbon nanotubes Aluminum matrix composites In-situ neutron diffraction Load partitioning |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS |
| DOI | 10.1016/j.jmst.2020.04.016 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National 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 Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000545310500007 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/139719 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xiao, B. L.; Ma, Z. Y. |
| Affiliation | 1.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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