| The highest fatigue strength for steels | |
| Wang, Peng1,2; Xu, Zikuan1; Zhang, Peng1,2; Wang, Bin1; Liu, Xiaochun3; Zhu, Yankun1; Liu, Rui1; Liu, Yang1; Luan, Yikun1,2; Wang, Pei1,2; Li, Dianzhong1,2; Ritchie, Robert O.4; Zhang, Zhefeng1,2 | |
| 通讯作者 | Zhang, Peng(pengzhang@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn) ; Ritchie, Robert O.(roritchie@lbl.gov) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn) |
| 2025-05-01 | |
| 发表期刊 | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| 卷号 | 289页码:10 |
| 摘要 | Improving the fatigue strength of engineering materials is the most important strategy to ensure the safety of key components. Regrettably, although a large number of high-strength materials have tensile strengths over 3 GPa, their fatigue strengths do not exceed 1 GPa under push-pull loading. Here, we report the highest fatigue strength for steels to date (of 1103 MPa) under push-pull loading with the stress ratio of R =-1 in a GCr15 bearing steel, achieved by precisely controlling the microstructure and defects. First, the plasticity of the inclusions is improved by adding minute rare-earth elements, which efficiently prevents their brittle fracture. Second, a new shearable inclusion/matrix interface structure is formed, further improving their collaborative deformation ability. Third, an excellent synergy between tensile strength and plasticity is achieved by adjusting heat treatment to reduce the fatigue cracking tendency at inclusions. These new findings provide insight into how the fatigue strength of highstrength steels can be improved, through microstructural adjustment and defect control. This strategy can be readily achieved with current industrial technologies and provides a promising and effective procedure to improve the fatigue properties of other high-strength metallic materials. |
| 关键词 | High-strength steel Fatigue strength Inclusion Rare-earth element Heat treatment |
| 资助者 | National Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science and Technology Major Project ; Outstanding Postgraduate Innovative Research Project CAS ; KC Wong Education Foundation |
| DOI | 10.1016/j.actamat.2025.120888 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China (NSFC)[52321001] ; National Natural Science Foundation of China (NSFC)[52001310] ; National Natural Science Foundation of China (NSFC)[52371123] ; National Natural Science Foundation of China (NSFC)[52130002] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04040502] ; National Science and Technology Major Project[J2019-VI-0019-0134] ; Outstanding Postgraduate Innovative Research Project CAS[1193002090] ; KC Wong Education Foundation[GJTD-2020-09] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS记录号 | WOS:001441407600001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/179802 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Zhang, Peng; Li, Dianzhong; Ritchie, Robert O.; Zhang, Zhefeng |
| 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.Changsha Univ Sci & Technol, Inst Met, Coll Mat Sci & Engn, Changsha 410114, Peoples R China 4.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Wang, Peng,Xu, Zikuan,Zhang, Peng,et al. The highest fatigue strength for steels[J]. ACTA MATERIALIA,2025,289:10. |
| APA | Wang, Peng.,Xu, Zikuan.,Zhang, Peng.,Wang, Bin.,Liu, Xiaochun.,...&Zhang, Zhefeng.(2025).The highest fatigue strength for steels.ACTA MATERIALIA,289,10. |
| MLA | Wang, Peng,et al."The highest fatigue strength for steels".ACTA MATERIALIA 289(2025):10. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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