| Enhanced co-deformation of a heterogeneous nanolayered Cu/Ni composite | |
Wang YD1; Li JJ1,2; Lu WJ3; Yuan FP(袁福平)4 ; Wu XL(武晓雷)4
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| Corresponding Author | Li, Jianjun([email protected]) |
| Source Publication | JOURNAL OF APPLIED PHYSICS
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| 2019-12-07 | |
| Volume | 126Issue:21Pages:9 |
| ISSN | 0021-8979 |
| Abstract | Nanolayered metallic composites have attracted intensive scientific interests due to their ultrahigh strength. However, the deformation incompatibility among the component layers with high mechanical contrast leads to extremely low tensile ductility in the nanolayered composites, which is a great setback for their engineering applications. Here, by molecular dynamics simulations, we show that a heterogeneous nanolayered design by combining 2.5 nm and 24 nm Cu/Ni bilayers in a composite in an appropriate way can promote the dislocation activity of the hard phase, i.e., the Ni layers. In the new heterogeneous structure, each 24 nm Cu or Ni layer is coated on both surfaces by one 2.5 nm Cu/Ni bilayer. The simulations show that the dislocations in the 24 nm Ni layers can nucleate and glide almost synchronously with those in the 24 nm Cu layers. The enhanced dislocation activities are attributed to the presence of the 2.5 nm Cu layer that can promote the dislocation nucleation and motion in the 24 nm Ni layer by forming more nodes in the dislocation network of the interface. Published under license by AIP Publishing. |
| DOI | 10.1063/1.5121625 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000504007300030 |
| WOS Keyword | PLASTIC-DEFORMATION ; MECHANICAL-PROPERTIES ; CU ; MICROPILLARS ; MULTILAYERS ; BEHAVIOR ; INSTABILITY ; INTERFACES ; STRENGTH ; AG |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied |
| Funding Project | National Key R&D Program of China[2017YFA0204402] ; National Natural Science Foundation of China (NSFC)[11872380] ; Natural Science Foundation of Hunan Province[2019JJ50750] ; Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University[ZZYJKT2018-05] ; Opening fund of State Key Laboratory of Nonlinear Mechanics, China ; Central South University, China |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Hunan Province ; Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University ; Opening fund of State Key Laboratory of Nonlinear Mechanics, China ; Central South University, China |
| Classification | 二类 |
| Ranking | 4 |
| Contributor | Li, Jianjun |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/81251 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Cent S Univ, Sch Mech & Elect Engn, Changsha 410083, Hunan, Peoples R China; 2.Cent S Univ, State Key Lab High Performance Complex Mfg, Changsha 410083, Hunan, Peoples R China; 3.Max Planck Inst Eisenforsch GmbH, Dept Microstruct Phys & Alloy Design, D-40237 Dusseldorf, Germany; 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Wang YD,Li JJ,Lu WJ,et al. Enhanced co-deformation of a heterogeneous nanolayered Cu/Ni composite[J]. JOURNAL OF APPLIED PHYSICS,2019,126,21,:9.Rp_Au:Li, Jianjun |
| APA | Wang YD,Li JJ,Lu WJ,袁福平,&武晓雷.(2019).Enhanced co-deformation of a heterogeneous nanolayered Cu/Ni composite.JOURNAL OF APPLIED PHYSICS,126(21),9. |
| MLA | Wang YD,et al."Enhanced co-deformation of a heterogeneous nanolayered Cu/Ni composite".JOURNAL OF APPLIED PHYSICS 126.21(2019):9. |
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| Jp2019458.pdf（6027KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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