Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites
文献类型：期刊论文
| 作者 | Tan, HF; Zhang, B; Zhang, GP; Zhang, B (reprint author), Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China. |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2018-02-14 |
| 卷号 | 716页码:72-77 |
| ISSN号 | 0921-5093 |
| 关键词 | Mechanical-properties Hardening Behavior Sheet Metals Tensile Test Multilayers Plasticity Deformation Fracture Work Identification |
| 英文摘要 | Cu/Ni laminated composites with the same total thickness of 128 gm, but different modulation wavelength lambda (the sum of monolayer thickness of constituent layers) of 32 gm and 3 pm, respectively were prepared using a dual-bath electrodeposition technique. The tensile testing results and the quantitative characterization of strain gradient in the post-necking region of the composites reveal that the lambda = 3 mu m composites have the higher tensile strength and the better strain hardening ability, as well as the stronger resistance to post-necking compared with the lambda = 32 mu m ones. A high density of layer interfaces in the ultrathin laminated composite may play a key role in delaying the development of unstable plastic deformation along the layer thickness direction through periodical strain gradient and a number of geometrically necessary dislocations near the interfaces. Thus, the fatal localized plastic deformation along the through thickness direction has to be spread over along the loading direction, leading to the large neck breadth in the ultrathin laminated composites.; Cu/Ni laminated composites with the same total thickness of 128 gm, but different modulation wavelength lambda (the sum of monolayer thickness of constituent layers) of 32 gm and 3 pm, respectively were prepared using a dual-bath electrodeposition technique. The tensile testing results and the quantitative characterization of strain gradient in the post-necking region of the composites reveal that the lambda = 3 mu m composites have the higher tensile strength and the better strain hardening ability, as well as the stronger resistance to post-necking compared with the lambda = 32 mu m ones. A high density of layer interfaces in the ultrathin laminated composite may play a key role in delaying the development of unstable plastic deformation along the layer thickness direction through periodical strain gradient and a number of geometrically necessary dislocations near the interfaces. Thus, the fatal localized plastic deformation along the through thickness direction has to be spread over along the loading direction, leading to the large neck breadth in the ultrathin laminated composites. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 资助机构 | National Natural Science Foundation of China (NSFC) [51371047, 51671050]; NSFC [51371180] |
| 公开日期 | 2018-06-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79502]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, B (reprint author), Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Tan, HF,Zhang, B,Zhang, GP,et al. Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,716:72-77. |
| APA | Tan, HF,Zhang, B,Zhang, GP,&Zhang, B .(2018).Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,716,72-77. |
| MLA | Tan, HF,et al."Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 716(2018):72-77. |
入库方式： OAI收割
来源：金属研究所
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