| Improved fatigue resistance of gradient nanograined Cu | |
| Long, Jianzhou1; Pan, Qingsong1; Tao, Nairong1; Dao, Ming2; Suresh, Subra3; Lu, Lei1 | |
| Corresponding Author | Suresh, Subra(ssuresh@ntu.edu.sg) ; Lu, Lei(llu@imr.ac.cn) |
| 2019-03-01 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 166Pages:56-66 |
| Abstract | Cyclic stresses generally lead to fatigue damage and failure with important implications for material and component design, safety, performance and lifetime costs in major structural applications. Here we present unique results for copper to demonstrate that a thin superficial layer of graded surface nanostructure over a coarse-grained core suppresses strain localization and surface roughening, thereby imparting unprecedented resistance to both low-cycle and high-cycle fatigue without compromising ductility. Progressive homogenization of the surface-graded copper is shown to be superior in fatigue properties compared to that of any of its homogeneous counterparts with micro-, submicro- or nanograined structures. Since the findings here for enhancing resistance to fatigue are broadly applicable to a wide spectrum of engineering metals and alloys, the present results offer unique pathways to mitigate fatigue damage using a broad variety of processing routes, geometric design considerations, and structural parameters in many practical applications. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | Graded nanostructures Surface engineering Fatigue resistance Surface roughening Microstructural convergence |
| Funding Organization | National Science Foundation of China ; Key Research Program of Frontier Science, CAS ; Distinguished University Professorship at Nanyang Technological University, Singapore |
| DOI | 10.1016/j.actamat.2018.12.018 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Science Foundation of China[51420105001] ; National Science Foundation of China[51471172] ; National Science Foundation of China[U1608257] ; Key Research Program of Frontier Science, CAS ; Distinguished University Professorship at Nanyang Technological University, Singapore |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000459358200006 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/131964 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Suresh, Subra; Lu, Lei |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA 3.Nanyang Technol Univ, Singapore 639798, Singapore |
| Recommended Citation GB/T 7714 | Long, Jianzhou,Pan, Qingsong,Tao, Nairong,et al. Improved fatigue resistance of gradient nanograined Cu[J]. ACTA MATERIALIA,2019,166:56-66. |
| APA | Long, Jianzhou,Pan, Qingsong,Tao, Nairong,Dao, Ming,Suresh, Subra,&Lu, Lei.(2019).Improved fatigue resistance of gradient nanograined Cu.ACTA MATERIALIA,166,56-66. |
| MLA | Long, Jianzhou,et al."Improved fatigue resistance of gradient nanograined Cu".ACTA MATERIALIA 166(2019):56-66. |
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