| Tension-compression fatigue behaviors of uniform and bimodal carbon nanotube/Al-Cu-Mg composites | |
| Ma, K.; Li, X. N.; Zhang, J. F.; Liu, Z. Y.; Xiao, B. L.; Ma, Z. Y. | |
| Corresponding Author | Liu, Z. Y.(zyliu@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn) |
| 2022-10-01 | |
| Source Publication | MATERIALS CHARACTERIZATION
 |
| ISSN | 1044-5803 |
| Volume | 192Pages:9 |
| Abstract | By introducing the ductile-zones (DZs) without carbon nanotubes (CNTs) into the brittle-zones (BZs) containing CNTs, constructing the bimodal structure, can effectively improve the toughness of CNT reinforced Al (CNT/Al) composites. However, to be applied in the field of aerospace, CNT/Al composites will be required to have high toughness, as well as high fatigue strength. At the present study, the fatigue behaviors of uniform and bimodal CNT/Al composites under the tension-compression state with the stress ratio of -1 were investigated. It was found that CNT rich zones could keep grains stable after the fatigue loading. However, for the bimodal CNT/Al composites, the preferential local deformation occurred in the DZs, which resulted in much lower fatigue strength as compared to the uniform composite. By reducing the grain size of DZs to ultra-fine grain (UFG) level, the large number of grain boundaries within the DZs hindered the directional movement of slip bands, which significantly enhanced the fatigue strength and achieved a higher toughness of bimodal CNT/Al composites. This discovery provides a new strategy for the preparation of high performance CNT/Al composites, and the bimodal CNT/Al composite with UFG DZs is expected to be applied in the aerospace field. |
| Keyword | Carbon nanotube Metal matrix composite Bimodal structure Fatigue |
| Funding Organization | National Natural Science Foundation of China ; Liao Ning Revitalization Talents Program ; Shenyang Young and Middle-Aged Scientific and Technological Innovation Talents Support Plan ; Youth Innovation Promotion Association CAS ; China Scholarship Council |
| DOI | 10.1016/j.matchar.2022.112193 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[52192595] ; National Natural Science Foundation of China[51871215] ; National Natural Science Foundation of China[51871214] ; Liao Ning Revitalization Talents Program[XLYC1902058] ; Shenyang Young and Middle-Aged Scientific and Technological Innovation Talents Support Plan[RC210490] ; Youth Innovation Promotion Association CAS[2020197] ; China Scholarship Council |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing |
| WOS ID | WOS:000863167000004 |
| Publisher | ELSEVIER SCIENCE INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175927 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Z. Y.; Xiao, B. L. |
| Affiliation | 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 | Ma, K.,Li, X. N.,Zhang, J. F.,et al. Tension-compression fatigue behaviors of uniform and bimodal carbon nanotube/Al-Cu-Mg composites[J]. MATERIALS CHARACTERIZATION,2022,192:9. |
| APA | Ma, K.,Li, X. N.,Zhang, J. F.,Liu, Z. Y.,Xiao, B. L.,&Ma, Z. Y..(2022).Tension-compression fatigue behaviors of uniform and bimodal carbon nanotube/Al-Cu-Mg composites.MATERIALS CHARACTERIZATION,192,9. |
| MLA | Ma, K.,et al."Tension-compression fatigue behaviors of uniform and bimodal carbon nanotube/Al-Cu-Mg composites".MATERIALS CHARACTERIZATION 192(2022):9. |
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