Microscopic stresses in carbon nanotube reinforced aluminum matrix composites determined by in-situ neutron diffraction

doi:10.1016/j.jmst.2020.04.016

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	Microscopic stresses in carbon nanotube reinforced aluminum matrix composites determined by in-situ neutron diffraction
	Zhang, X. X.2; Zhang, J. F.2; Liu, Z. Y.2; Gan, W. M.1; Hofmann, M.3; Andrae, H.4; Xiao, B. L.2; Ma, Z. Y.2
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2020-10-01
卷号	54 页码:58-68
关键词	Carbon nanotubes Aluminum matrix composites In-situ neutron diffraction Load partitioning
ISSN号	1005-0302
DOI	10.1016/j.jmst.2020.04.016
通讯作者	Xiao, B. L.(blxiao@imr.ac.cn) ; Ma, Z. Y.(zyma@imr.ac.cn)
英文摘要	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.
资助项目	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研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000545310500007
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/139718]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xiao, B. L.; Ma, Z. Y.
作者单位	1.Helmholtz Zentrum Geesthacht, German Engn Mat Sci Ctr MLZ, D-85747 Garching, Germany 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 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
推荐引用方式 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.