Evaluating the fatigue cracking risk of surface strengthened 50CrMnMoVNb spring steel with abnormal life time distribution
文献类型：期刊论文
| 作者 | Wang, DQQ; Wang, Q; Zhu, YK; Zhang, P; Zhang, ZJ; Ren, CX; Li, XW; Zhang, ZF |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2018-08-08 |
| 卷号 | 732页码:192-204 |
| 关键词 | Spring steel Surface spinning strengthening Fatigue crack Fatigue life Fatigue risk factor |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2018.06.099 |
| 英文摘要 | Surface strengthening is an important method which can effectively improve the fatigue property of metallic materials. In order to improve the fatigue property, for the first time, a new developed surface spinning strengthening-II (3S-II) method and the traditional shot peening (SP) treatment were applied to modify the microstructure and fatigue performance in the surface layer of 50CrMnMoVNb spring steel. It is interesting to find that the fatigue lives of the samples treated by the 3S-II method show obvious polarization characteristics (either quite higher or slightly lower than those treated by SP method) at the high stress amplitude, which does not follow the traditional life distribution rules and cannot be evaluated by the S-N curve. Moreover, the fatigue lives of the samples with the fatigue crack initiated from the surface defects are extremely lower than those of the samples whose fatigue crack initiated from the subsurface. Therefore, a fatigue risk factor, "R-f", was proposed and developed based on the competition between the applied stress and the material property to evaluate the fatigue cracking risk of the surface strengthened 50CrMnMoVNb spring steel, especially the fatigue risk of the samples influenced by the mixed factors. The calculation results show that the position where "R-f", appears is exactly the position of fatigue crack initiation. As a result, "R-f" can be used to quantitatively evaluate the fatigue risk of metallic material under the influence of a variety of factors, including surface strengthening, surface roughness and residual compressive stress and so on. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000441486100024 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/80030]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.[Wang, D. Q. Q. 2.Wang, Q. 3.Zhu, Y. K. 4.Zhang, P. 5.Zhang, Z. J. 6.Ren, C. X. 7.Zhang, Z. F.] Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 8.[Wang, D. Q. Q. 9.Li, X. W.] Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Minist Educ, Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China 10.[Wang, D. Q. Q. |
| 推荐引用方式 GB/T 7714 | Wang, DQQ,Wang, Q,Zhu, YK,et al. Evaluating the fatigue cracking risk of surface strengthened 50CrMnMoVNb spring steel with abnormal life time distribution[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,732:192-204. |
| APA | Wang, DQQ.,Wang, Q.,Zhu, YK.,Zhang, P.,Zhang, ZJ.,...&Zhang, ZF.(2018).Evaluating the fatigue cracking risk of surface strengthened 50CrMnMoVNb spring steel with abnormal life time distribution.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,732,192-204. |
| MLA | Wang, DQQ,et al."Evaluating the fatigue cracking risk of surface strengthened 50CrMnMoVNb spring steel with abnormal life time distribution".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 732(2018):192-204. |
入库方式： OAI收割
来源：金属研究所
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