| Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu | |
| Cheng, Zhao1; Wan, Tao1,2; Lu, Lei1 | |
| Corresponding Author | Lu, Lei(llu@imr.ac.cn) |
| 2023-09-01 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 256Pages:10 |
| Abstract | Interfaces play a crucial role in mechanical behaviors of laminated materials. In this study, a series of hard/soft nanotwinned Cu laminates with varying interface spacing from 200 to 33 & mu;m are prepared by means of direct current electrodeposition. Simultaneous improvement of strength and work hardening with decreasing interface spacing is found in tensile tests. Extra strengthening and geometrically necessary dislocations (GNDs), but without any strain concentration, are found in the vicinity of interfaces. An obvious strain discrepancy appears across the interface and decreases with decreasing interface spacing. Most importantly, a highest plastic strain gradient appearing in the vicinity of interfaces, regardless of interface spacing, indicates a significant deformation compatibility across the interfaces. The spatially-distributed strengthening mediated by interface contributes for increasing strength and decreasing strain discrepancy by decreasing the interface spacing. |
| Keyword | Laminated nanotwin Cu Extra strengthening Interface strain gradient Geometrically necessary dislocation Interface spacing |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; Key Research Program of Frontier Science and International partnership program ; Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS) |
| DOI | 10.1016/j.actamat.2023.119138 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[51931010] ; National Natural Science Foundation of China (NSFC)[92163202] ; Key Research Program of Frontier Science and International partnership program[GJHZ2029] ; Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS) ; [52001312] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:001039831400001 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/178775 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu, Lei |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China |
| Recommended Citation GB/T 7714 | Cheng, Zhao,Wan, Tao,Lu, Lei. Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu[J]. ACTA MATERIALIA,2023,256:10. |
| APA | Cheng, Zhao,Wan, Tao,&Lu, Lei.(2023).Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu.ACTA MATERIALIA,256,10. |
| MLA | Cheng, Zhao,et al."Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu".ACTA MATERIALIA 256(2023):10. |
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