| Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite | |
| Mohammed, S. M. A. K.1; Chen, D. L.1; Liu, Z. Y.2; Ni, D. R.2; Wang, Q. Z.2; Xiao, B. L.2; Ma, Z. Y.2 | |
| Corresponding Author | Chen, D. L.(dchen@ryerson.ca) ; Ma, Z. Y.(zyma@imr.ac.cn) |
| 2021-06-10 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 817Pages:9 |
| Abstract | The aim of this study was to identify deformation behavior and strengthening mechanisms of a carbon nanotube (CNT)-reinforced bimodal-grained Al-Cu-Mg nanocomposite and its base alloy fabricated by two-step ball milling, powder metallurgy and extrusion. A superior strength-ductility synergy stemming from the concurrent presence of ultrafine grains (UFGs) and coarse grains (CGs) was achieved. Singly-dispersed CNTs in UFGs and sound CNT/Al interfacial bond contributed to a significant improvement in the strength of the nanocomposite. The predominant strengthening mechanism in the CNT-reinforced nanocomposite was identified to be Orowan looping due to severe shearing of CNTs into nano-sized fragments during ball milling, along with load-transfer and thermal mismatch-induced dislocation strengthening mechanisms. The predicted yield strength of the nanocomposite was in agreement with the experimental value obtained. The findings in this study help pave the way for developing high-performance lightweight materials with a superior strength-ductility synergy via incorporating CNTs with novel bimodal grain structures. |
| Keyword | Metal matrix nanocomposites Bimodal grain structure Carbon nanotube Deformation behavior Strengthening mechanisms |
| Funding Organization | Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; National Key R&D Program of China |
| DOI | 10.1016/j.msea.2021.141370 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[51871214] ; National Natural Science Foundation of China[51871215] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC015] ; National Key R&D Program of China[2017YFB0703104] |
| 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:000658867700002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/160395 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Chen, D. L.; Ma, Z. Y. |
| Affiliation | 1.Ryerson Univ, Dept Mech & Ind Engn, Toronto, ON M5B 2K3, Canada 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Mohammed, S. M. A. K.,Chen, D. L.,Liu, Z. Y.,et al. Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,817:9. |
| APA | Mohammed, S. M. A. K..,Chen, D. L..,Liu, Z. Y..,Ni, D. R..,Wang, Q. Z..,...&Ma, Z. Y..(2021).Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,817,9. |
| MLA | Mohammed, S. M. A. K.,et al."Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 817(2021):9. |
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