| Mechanical properties and optimum layer thickness in an amorphous Ni-P/coarse-grained Ni bi-layered structure | |
| Cao, R. Q.1,2; Pan, J.1; Lin, Y.1; Li, Y.1 | |
| Corresponding Author | Pan, J.(jiepan@imr.ac.cn) ; Li, Y.(liyi@imr.ac.cn) |
| 2019-07-08 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 760Pages:458-468 |
| Abstract | In the present study, we systematically investigate the mechanical behavior of a bi-layered structure consisting of a coarse-grained (CG) Ni substrate plus an amorphous Ni-P surface layer. It is found that a desirable combination of high strength and high ductility can be attained by tailoring the thickness of Ni-P layer. An optimal layer thickness of similar to 6.5 mu m is discovered, where the specimen having a bi-layered structure exhibits a yield strength of 236 MPa and an uniform elongation of 32.6%, which are 1.13 and 1.11 times of those in the corresponding coarse-grained Ni. Experimental observations and finite element modeling (FEM) simulations reveal that this optimum bi-layered structure under tension induces large stress and strain gradients in the CG Ni substrate, resulting in the significant back stress and deformation twinning. Therefore, the plastic deformation can be more effectively accommodated, leading to the observed extra uniform elongation in the bi-layered structure. |
| Keyword | Bi-layered structure Amorphous layer thickness Extra elongation Back stress Deformation twinning |
| Funding Organization | National Natural Science Foundation of China ; Joint Foundation of Liaoning Province National Science Foundation ; Shenyang National Laboratory for Materials Science |
| DOI | 10.1016/j.msea.2019.05.105 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51471165] ; Joint Foundation of Liaoning Province National Science Foundation ; Shenyang National Laboratory for Materials Science[2015021007] |
| 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:000474501200045 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134390 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Pan, J.; Li, Y. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China |
| Recommended Citation GB/T 7714 | Cao, R. Q.,Pan, J.,Lin, Y.,et al. Mechanical properties and optimum layer thickness in an amorphous Ni-P/coarse-grained Ni bi-layered structure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,760:458-468. |
| APA | Cao, R. Q.,Pan, J.,Lin, Y.,&Li, Y..(2019).Mechanical properties and optimum layer thickness in an amorphous Ni-P/coarse-grained Ni bi-layered structure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,760,458-468. |
| MLA | Cao, R. Q.,et al."Mechanical properties and optimum layer thickness in an amorphous Ni-P/coarse-grained Ni bi-layered structure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 760(2019):458-468. |
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