| Superior fatigue crack growth resistance in bulk Cu with highly oriented nanotwins | |
| Zhao, Ruike1,2; Zhao, Huaizhi3; Lu, Lei1 | |
| 通讯作者 | Lu, Lei(llu@imr.ac.cn) |
| 2023-10-10 | |
| 发表期刊 | SCIENCE CHINA-MATERIALS
 |
| ISSN | 2095-8226 |
| 页码 | 7 |
| 摘要 | We studied the fatigue crack growth (FCG) characteristics of bulk nanotwinned Cu (NT-Cu) with different microstructural aspects such as grain size and twin thickness. We specifically addressed the crack closure, with particular emphasis on the intrinsic FCG resistances in the near-threshold regime. The results demonstrate that the NT-Cu samples have significantly improved fatigue resistances compared with conventional twin-free polycrystalline Cu, a fact we measured using the effective threshold stress intensity factor range, Delta Kth,eff. This enhanced resistance can be traced back to the activation of a specific set of primary slip systems in the NT-Cu, known as special trans-twin dislocation, which dominates the crack-tip cyclic deformation, leading to a diminished level of cyclical slip irreversibility and, in turn, enhancing the inherent resistance to damage propagation. |
| 关键词 | nanotwins fatigue crack growth rate crack closure effective crack growth threshold |
| 资助者 | Lu L acknowledges the financial support by the National Natural Science Foundation of China (NSFC, 51931010 and 92163202) and the Key Research Program of Frontier Science and International partnership program (GJHZ2029). ; National Natural Science Foundation of China ; Key Research Program of Frontier Science and International partnership program |
| DOI | 10.1007/s40843-023-2622-1 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | Lu L acknowledges the financial support by the National Natural Science Foundation of China (NSFC, 51931010 and 92163202) and the Key Research Program of Frontier Science and International partnership program (GJHZ2029).[51931010] ; Lu L acknowledges the financial support by the National Natural Science Foundation of China (NSFC, 51931010 and 92163202) and the Key Research Program of Frontier Science and International partnership program (GJHZ2029).[92163202] ; National Natural Science Foundation of China[GJHZ2029] ; Key Research Program of Frontier Science and International partnership program |
| WOS研究方向 | Materials Science |
| WOS类目 | Materials Science, Multidisciplinary |
| WOS记录号 | WOS:001083241900001 |
| 出版者 | SCIENCE PRESS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/179480 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Lu, Lei |
| 作者单位 | 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 110016, Peoples R China 3.China Acad Engn Phys, Inst Fluid Phys, Mianyang 621999, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Ruike,Zhao, Huaizhi,Lu, Lei. Superior fatigue crack growth resistance in bulk Cu with highly oriented nanotwins[J]. SCIENCE CHINA-MATERIALS,2023:7. |
| APA | Zhao, Ruike,Zhao, Huaizhi,&Lu, Lei.(2023).Superior fatigue crack growth resistance in bulk Cu with highly oriented nanotwins.SCIENCE CHINA-MATERIALS,7. |
| MLA | Zhao, Ruike,et al."Superior fatigue crack growth resistance in bulk Cu with highly oriented nanotwins".SCIENCE CHINA-MATERIALS (2023):7. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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