Improving the high-cycle fatigue strength of heterogeneous carbon nanotube/Al-Cu-Mg composites through grain size design in ductile-zones
文献类型：期刊论文
| 作者 | Ma, K.1,2; Li, X. N.1; Liu, K.2; Chen, X. G.2; Liu, Z. Y.1; Xiao, B. L.1; Ma, Z. Y.1 |
| 刊名 | COMPOSITES PART B-ENGINEERING
 |
| 出版日期 | 2021-10-01 |
| 卷号 | 222页码:9 |
| ISSN号 | 1359-8368 |
| 关键词 | Metal-matrix composites (MMCs) Carbon nanotube Fatigue Powder processing |
| DOI | 10.1016/j.compositesb.2021.109094 |
| 通讯作者 | Liu, Z. Y.(zyliu@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn) |
| 英文摘要 | Heterogeneous structure consisting of brittle-zones (BZs) rich of carbon nanotubes (CNTs) and ductile-zones (DZs) free of CNTs, was an effective way to improve the strength-ductility of CNT reinforced Al (CNT/Al) composites. Two heterogeneous CNT/2009Al composites with coarse grain (CG, -2 mu m) DZs or ultra-fine grain (UFG, -500 nm) DZs were fabricated and achieved enhanced strength-ductility. However, the heterogeneous composite with CG DZs had a lower high-cycle fatigue strength as well as fatigue strength/tensile strength ratio than the uniform composite, while the heterogeneous composite with UFG DZs exhibited the increased fatigue strength and the same level of fatigue strength/tensile strength ratio compared to the uniform composite. It was found that the improved fatigue properties for the heterogeneous composite with the UFG DZs could attribute to two reasons. Firstly, the UFG for the DZs significantly increased the strength of DZs, which effectively reduced the strain localization in the DZs. Secondly, the dislocations piling up at the grain boundaries of the BZs, as well as the stress concentration at the boundaries between the DZs and BZs were relieved due to the coordinated micro-strain for the heterogeneous structure. This provided a simple strategy for the structural design of heterogeneous composites with high fatigue strength. |
| 资助项目 | Key R&D Program of China[2017YFB0703104] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC015] ; National Natural Science Foundation of China[51871215] ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[51871214] ; Youth Innovation Promotion Association CAS[2020197] ; China Scholarship Council |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000687382500002 |
| 资助机构 | Key R&D Program of China ; Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; China Scholarship Council |
| 源URL | [http://ir.imr.ac.cn/handle/321006/166829]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Z. Y.; Xiao, B. L. |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Quebec Chicoutimi, Dept Appl Sci, Saguenay, PQ G7H 2B1, Canada |
| 推荐引用方式 GB/T 7714 | Ma, K.,Li, X. N.,Liu, K.,et al. Improving the high-cycle fatigue strength of heterogeneous carbon nanotube/Al-Cu-Mg composites through grain size design in ductile-zones[J]. COMPOSITES PART B-ENGINEERING,2021,222:9. |
| APA | Ma, K..,Li, X. N..,Liu, K..,Chen, X. G..,Liu, Z. Y..,...&Ma, Z. Y..(2021).Improving the high-cycle fatigue strength of heterogeneous carbon nanotube/Al-Cu-Mg composites through grain size design in ductile-zones.COMPOSITES PART B-ENGINEERING,222,9. |
| MLA | Ma, K.,et al."Improving the high-cycle fatigue strength of heterogeneous carbon nanotube/Al-Cu-Mg composites through grain size design in ductile-zones".COMPOSITES PART B-ENGINEERING 222(2021):9. |
入库方式： OAI收割
来源：金属研究所
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