| 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 Author | Liu, Z. Y.(zyliu@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn) |
| 2021-02-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 854Pages:10 |
| Abstract | In 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. |
| Keyword | Carbon nanotube Aluminum matrix composite Hot deformation Abnormal grain growth |
| 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 ; Guangxi Natural Science Foundation |
| DOI | 10.1016/j.jallcom.2020.157275 |
| 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 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 Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000596245900012 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/158778 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Z. Y.; Xiao, B. L. |
| Affiliation | 1.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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