Maintaining Grain Boundary Segregation-Induced Strengthening Effect in Extremely Fine Nanograined Metals
文献类型：期刊论文
| 作者 | Qian, Lei1; Zhang, Jiacheng1; Yang, Wenqing1; Wang YJ(王云江)2 ; Chan, Kangcheung1; Yang, XuSheng1
|
| 刊名 | NANO LETTERS
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 25期号:13页码:5493 |
| 关键词 | Grain boundary segregation amorphous grain boundary extremely fine grain size deformation mechanism strengthening effect |
| ISSN号 | 1530-6984 |
| DOI | 10.1021/acs.nanolett.5c01032 |
| 英文摘要 | Reinforcing grain boundaries through solute segregation is a promising strategy to strengthen nanograined metals. However, maintaining strengthening in extremely fine nanograined metals poses challenges due to grain size reduction and grain boundary structural changes from excessive segregation. This study employs hybrid Monte Carlo/Molecular Dynamics simulations to investigate the interplay between solute concentration, grain boundary structure, deformation mechanism, and strength in Zr-segregated nanograined Cu. Results exhibit significant strength enhancement by optimizing segregation, extending the strengthening effect to a grain size as small as 3.75 nm. Continuous Zr segregation induces a progressive transition from original grain boundaries to segregated and ultimately amorphous grain boundaries. Amorphization alters the dominant deformation mechanism from grain boundary migration to homogeneous shear-transformation-zone activation, fostering and optimizing the strengthening effect in extremely fine nanograined Cu. These findings inspire a novel approach of segregation-induced grain boundary amorphization to leverage strong boundaries and extremely fine nanograins for strengthening nanograined metals. |
| 分类号 | 一类 |
| WOS研究方向 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter ; Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001450967900001 |
| 资助机构 | This work was supported by the grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (No. PolyU15210123 and No. PolyU15201424), PolyU grants (No. 1-CD9D and No. 1-W271) and Fundamental Research Program of Shenzhen Science and Technology Innovation Commission (No. JCYJ20210324131405015). L.Q. and W.Y. were supported by a grant from the Research Committee of PolyU under student account code RK2U and RK3J, respectively. |
| 其他责任者 | Yang, XuSheng |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101457]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Hong Kong Polytechnic University; 2.Institute of Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Qian, Lei,Zhang, Jiacheng,Yang, Wenqing,et al. Maintaining Grain Boundary Segregation-Induced Strengthening Effect in Extremely Fine Nanograined Metals[J]. NANO LETTERS,2025,25(13):5493. |
| APA | Qian, Lei,Zhang, Jiacheng,Yang, Wenqing,王云江,Chan, Kangcheung,&Yang, XuSheng.(2025).Maintaining Grain Boundary Segregation-Induced Strengthening Effect in Extremely Fine Nanograined Metals.NANO LETTERS,25(13),5493. |
| MLA | Qian, Lei,et al."Maintaining Grain Boundary Segregation-Induced Strengthening Effect in Extremely Fine Nanograined Metals".NANO LETTERS 25.13(2025):5493. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。