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Hot deformation behavior and microstructure evolution of carbon nanotube/7055Al composite
Ma, K.1,2; Liu, Z. Y.1; Zhang, X. X.1; Xiao, B. L.1; Ma, Z. Y.1,3
Corresponding AuthorLiu, Z. Y.(zyliu@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn)
2021-02-15
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume854Pages:10
AbstractIn this study, carbon nanotube (CNT) reinforced 7055Al composite was fabricated by high energy ball milling combined with powder metallurgy. The as hot-pressed composite had an inhomogeneous microstructure composed of coarse grains without CNTs and fine grains with uniformly dispersed CNTs. Processing maps were established and the hot deformation behavior as well as the microstructure evolution during deformation was investigated. It was indicated that the power dissipation efficiency of the composite was relatively lower at higher deformation temperature or lower strain rate. Abnormal grain growth (AGG) and cracking occurred when the composite was deformed at high temperature with low strain rate. A few of CNTs were embedded into coarse grains as AGG occurred, and the micro-cracks formed at the boundaries between the coarse and the fine grained zones. The cracking mechanism was considered as the stress concentration caused by the dragging effect of CNTs, and the reduced critical stress required for pore nucleation due to AGG at the boundaries between the coarse and the fine grained zones. (C) 2020 Elsevier B.V. All rights reserved.
KeywordCarbon nanotube Aluminum matrix composite Hot deformation Abnormal grain growth
Funding OrganizationKey Research Program of Frontier Sciences, CAS ; National Key R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Guangxi Natural Science Foundation
DOI10.1016/j.jallcom.2020.157275
Indexed BySCI
Language英语
Funding ProjectKey Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC015] ; National Key R&D Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[51871214] ; National Natural Science Foundation of China[51871215] ; Youth Innovation Promotion Association CAS[2020197] ; Guangxi Natural Science Foundation[2016GXNSFDA380028]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000596245900012
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158778
Collection中国科学院金属研究所
Corresponding AuthorLiu, Z. Y.; Xiao, B. L.
Affiliation1.Chinese Acad Sci, Shichangxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Guilin Univ Technol, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China
Recommended Citation
GB/T 7714
Ma, K.,Liu, Z. Y.,Zhang, X. X.,et al. Hot deformation behavior and microstructure evolution of carbon nanotube/7055Al composite[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,854:10.
APA Ma, K.,Liu, Z. Y.,Zhang, X. X.,Xiao, B. L.,&Ma, Z. Y..(2021).Hot deformation behavior and microstructure evolution of carbon nanotube/7055Al composite.JOURNAL OF ALLOYS AND COMPOUNDS,854,10.
MLA Ma, K.,et al."Hot deformation behavior and microstructure evolution of carbon nanotube/7055Al composite".JOURNAL OF ALLOYS AND COMPOUNDS 854(2021):10.
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