| Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites | |
| Liang, Fei1,2; Luo, Xue-Mei1; Zhang, Guang-Ping1 | |
| Corresponding Author | Zhang, Guang-Ping(gpzhang@imr.ac.cn) |
| 2019-01-16 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 743Pages:436-444 |
| Abstract | Maximizing the interface coupling effect is a key to improve mechanical properties of laminate/gradient structures. In this work, Ni/Cu/Ni sandwich-structured composites with the middle Cu layers cyclically deformed to different cycles were fabricated to investigate the influence of initial dislocation density on the interface-coupling-dependent mechanical behavior. Extra yield strength contributed by the interface coupling was found to decrease with decreasing the degree of mechanical incompatibility across the interface during uniaxial tensile loading. In addition, the width of geometrical necessary dislocation (GND) pile-up regions adjacent to the interfaces was observed to decrease with increasing the initial dislocation density of Cu layers, which is attributed to the change of source-obstacle configuration in the stress gradient model. These findings suggest that the GND strengthening effect caused by the interface coupling and the cyclic hardening effect in the constituent layers appears to be competitive, and the interface coupling effect is gradually weakened with increasing the initial dislocation density of Cu layers. |
| Keyword | Laminated composites Interface Geometrically necessary dislocation Stress gradient Interface-affected zone |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; NSFC ; IMR SYNL-T.S. Ke Research Fellowship |
| DOI | 10.1016/j.msea.2018.11.107 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[51671050] ; National Natural Science Foundation of China (NSFC)[51571199] ; NSFC[51771207] ; IMR SYNL-T.S. Ke Research Fellowship[Y6N7611161] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000456891500049 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/131761 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Guang-Ping |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Liang, Fei,Luo, Xue-Mei,Zhang, Guang-Ping. Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:436-444. |
| APA | Liang, Fei,Luo, Xue-Mei,&Zhang, Guang-Ping.(2019).Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,436-444. |
| MLA | Liang, Fei,et al."Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):436-444. |
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