IMR OpenIR
Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites
Bi, S.1,2; Liu, Z. Y.1; Yu, B. H.1; Wu, L. H.1; Xiao, B. L.1
Corresponding AuthorLiu, Z. Y.(zyliu@imr.ac.cn)
2020-10-21
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume797Pages:9
AbstractThe superplastic deformation behavior of a carbon nanotube reinforced high-strength aluminium alloy matrix composite (CNT/7055Al) was investigated at temperatures ranging from 300 to 425 degrees C and strain rates ranging from 10(-2) to 5 s(-1). A maximum elongation of 125% was observed for the as-extruded CNT/7055Al at 400 degrees C and a high strain rate of 5 s(-1). After a T6 treatment (solution and artificial aging treatment), the CNT/7055Al achieved a higher elongation of 153% at 400 degrees C and 5 s(-1) due to the fewer second-phase particles. The strain rate sensitivity and activation energy were determined to be 0.2 and 171 kJ/mol, respectively. Combined with microstructural observation, it was demonstrated that the main deformation mechanism for the CNT/7055Al was lattice diffusion controlled dislocation climb. Further, it was found that CNTs played a negative role in the superplastic deformation, which could be attributed to the large aspect ratio of CNTs and strong CNT-Al interface bonding.
KeywordSuperplasticity Carbon nanotubes Aluminium matrix composites High strain rate Deformation mechanism
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
DOI10.1016/j.msea.2020.140263
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 Key R&D Program of China[040103] ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[51871215] ; Youth Innovation Promotion Association CAS[2020197]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000579487100061
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/321006/141077
Collection中国科学院金属研究所
Corresponding AuthorLiu, Z. Y.
Affiliation1.Chinese Acad Sci, 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
Recommended Citation
GB/T 7714
Bi, S.,Liu, Z. Y.,Yu, B. H.,et al. Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,797:9.
APA Bi, S.,Liu, Z. Y.,Yu, B. H.,Wu, L. H.,&Xiao, B. L..(2020).Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,797,9.
MLA Bi, S.,et al."Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 797(2020):9.
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