| Amorphous Thickness-Dependent Strengthening-Softening Transition in Crystalline-Amorphous Nanocomposites | |
Qian, Lei; Yang, Wenqing; Luo, Jiasi; Wang YJ(王云江) ; Chan, K C; Yang, XuSheng
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| Corresponding Author | Yang, Xu-Sheng([email protected]) |
| Source Publication | NANO LETTERS
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| 2023-11-20 | |
| Volume | 23Issue:23Pages:11288-11296 |
| ISSN | 1530-6984 |
| Abstract | Core-shell crystalline-amorphous nanocomposites, featuring nanograins surrounded by thick amorphous boundaries, are promising nanoarchitectures for achieving exceptional strength through cooperative strengthening effects. However, a comprehensive understanding of the influence of characteristic sizes, particularly the amorphous thickness, on codeformation strengthening is still lacking, limiting the attainment of the strength limit. Here, we employ molecular dynamics simulations to investigate Cu-CuTa crystalline-amorphous nanocomposites with varying grain sizes and amorphous thicknesses. Our findings demonstrate significant strengthening effects in nanocomposites, effectively suppressing the Hall-Petch breakdown observed in traditional amorphous-free nanograined Cu. Intriguingly, we observe a maximum strength followed by a strengthening-softening transition dependent on the amorphous thickness, as exemplified by a representative nanocomposite featuring a 12.5 nm grain size and a critical amorphous thickness of 4 nm. Inspired by observed shifts in atomistic mechanisms, we developed a theoretical model encompassing variations in grain size and amorphous thickness, providing valuable insights into the size-strength relationship for crystalline-amorphous nanocomposites. |
| Keyword | crystalline-amorphous nanocomposite Cu-CuTa atomistic simulations codeformationcooperative mechanisms |
| DOI | 10.1021/acs.nanolett.3c03848 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001142880300001 |
| WOS Keyword | MECHANICAL-BEHAVIOR ; DEFORMATION MECHANISMS ; SIZE ; DUCTILITY ; FILMS |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| Funding Project | Hong Kong Polytechnic University[15210123] ; Hong Kong Research Grants Council[1-CD4K] ; PolyU grant[51971187] ; National Natural Science Foundation of China ; Research Committee of PolyU |
| Funding Organization | Hong Kong Polytechnic University ; Hong Kong Research Grants Council ; PolyU grant ; National Natural Science Foundation of China ; Research Committee of PolyU |
| Classification | 一类 |
| Ranking | 3+ |
| Contributor | Yang, Xu-Sheng |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94080 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Qian, Lei,Yang, Wenqing,Luo, Jiasi,et al. Amorphous Thickness-Dependent Strengthening-Softening Transition in Crystalline-Amorphous Nanocomposites[J]. NANO LETTERS,2023,23,23,:11288-11296.Rp_Au:Yang, Xu-Sheng |
| APA | Qian, Lei,Yang, Wenqing,Luo, Jiasi,王云江,Chan, K C,&Yang, XuSheng.(2023).Amorphous Thickness-Dependent Strengthening-Softening Transition in Crystalline-Amorphous Nanocomposites.NANO LETTERS,23(23),11288-11296. |
| MLA | Qian, Lei,et al."Amorphous Thickness-Dependent Strengthening-Softening Transition in Crystalline-Amorphous Nanocomposites".NANO LETTERS 23.23(2023):11288-11296. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2023Fa287.pdf（10103KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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