| A regime beyond the Hall-Petch and inverse-Hall-Petch regimes in ultrafine-grained solids | |
Zhang, Huijun; Liu, Feng; Ungar, Goran; Zheng ZY(郑中玉) ; Sun, Qingping; Han, Yilong
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| Corresponding Author | Zhang, Huijun([email protected]) ; Han, Yilong([email protected]) |
| Source Publication | COMMUNICATIONS PHYSICS
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| 2022-12-15 | |
| Volume | 5Issue:1Pages:9 |
| ISSN | 2399-3650 |
| Abstract | The strength of polycrystal increases as the grain diameter I decreases, i.e. the Hall-Petch behaviour. This trend reverses at about 3 < l < 15 nm, i.e. the inverse-Hall-Petch behaviour. How the grain size affects material's strength at l < 3 nm (-12 particles) remains unclear. Here our simulations use mixtures of soft and hard particles so that compression can continuously reduce Ito merely a few particles, resulting in ultrafine-grained solids termed as glass-crystal composites. Beyond the conventional Hall-Petch strengthening and inverse-Hall-Petch softening, we observe a power-law strengthening at l <14 particles as a result of the blockage of shear-banding by crystalline grains. Amorphous and crystalline regions accommodate shear strains via bond-breaking and collective rotation, respectively. Moreover, a polycrystal-glass transition occurs at l =14 particles featured with peaks of various quantities, which deepens the understanding on softening-strengthening transition. |
| DOI | 10.1038/s42005-022-01107-7 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000899584100001 |
| WOS Keyword | SHEAR BANDS ; TRANSITION ; STRENGTH ; SIZE ; FLUCTUATIONS ; DEFORMATION ; BEHAVIOR |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| Funding Project | Fundamental Research Funds for the Central Universities[xxj032021001] ; Key R&D Project of Shaanxi Province[2022GY-400] ; National Natural Science Foundation of China[12274336] ; 111 Project 2.0[BP2018008] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040301] ; Guangdong Basic and Applied Basic Research Foundation[2020B1515120067] ; Hong Kong Research Grants Council under the General Research Fund[CRF-C6016-20G] ; Hong Kong Research Grants Council under the General Research Fund[C6021-19EF] |
| Funding Organization | Fundamental Research Funds for the Central Universities ; Key R&D Project of Shaanxi Province ; National Natural Science Foundation of China ; 111 Project 2.0 ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Guangdong Basic and Applied Basic Research Foundation ; Hong Kong Research Grants Council under the General Research Fund |
| Classification | 二类/Q1 |
| Ranking | 3+ |
| Contributor | Zhang, Huijun ; Han, Yilong |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/91477 |
| Collection | 微重力重点实验室 |
| Recommended Citation GB/T 7714 | Zhang, Huijun,Liu, Feng,Ungar, Goran,et al. A regime beyond the Hall-Petch and inverse-Hall-Petch regimes in ultrafine-grained solids[J]. COMMUNICATIONS PHYSICS,2022,5,1,:9.Rp_Au:Zhang, Huijun, Han, Yilong |
| APA | Zhang, Huijun,Liu, Feng,Ungar, Goran,郑中玉,Sun, Qingping,&Han, Yilong.(2022).A regime beyond the Hall-Petch and inverse-Hall-Petch regimes in ultrafine-grained solids.COMMUNICATIONS PHYSICS,5(1),9. |
| MLA | Zhang, Huijun,et al."A regime beyond the Hall-Petch and inverse-Hall-Petch regimes in ultrafine-grained solids".COMMUNICATIONS PHYSICS 5.1(2022):9. |
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| Jp2022FA007.pdf（3619KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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