| 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 Author | Liu, Z. Y.(zyliu@imr.ac.cn) |
| 2020-10-21 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 797Pages:9 |
| Abstract | The 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. |
| Keyword | Superplasticity Carbon nanotubes Aluminium matrix composites High strain rate Deformation mechanism |
| Funding Organization | Key Research Program of Frontier Sciences, CAS ; National Key R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| DOI | 10.1016/j.msea.2020.140263 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Key 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 Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000579487100061 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141075 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Z. Y. |
| Affiliation | 1.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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