Evaluating the fatigue property of S355J2W steel butt-welded joint: Multiple notch effects
文献类型：期刊论文
| 作者 | Wang, D. Q. Q.1,2,3; Yao, D. D.4; Wang, Q.3; Gao, Z. B.4; Zhang, Z. F.1,2,3; Li, X. W.1,2 |
| 刊名 | INTERNATIONAL JOURNAL OF FATIGUE
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 167页码:12 |
| ISSN号 | 0142-1123 |
| 关键词 | Weathering steel Butt-welded joint Weld toe Stress concentration Fatigue |
| DOI | 10.1016/j.ijfatigue.2022.107362 |
| 通讯作者 | Wang, Q.(gmwang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) ; Li, X. W.(xwli@mail.neu.edu.cn) |
| 英文摘要 | The fatigue fracture mechanisms , the fatigue property evaluations of S355J2W steel butt-welded joints relieved welding residual stresses with and without welding reinforcement were systematically investigated by microstructure characterization and fatigue tests. Experimental results show that the complex evolution of microstructure at welded joint results in the notable degradation of mechanical properties. The fatigue perfor-mance of the as-welded specimen with welding reinforcement is significantly poorer than that of the smooth -welded specimen without welding reinforcement. Stress concentration under the fish-scale pattern at the weld toe caused by geometric dimension change is the major reason for the fatigue fracture of the as-welded specimen. By comparison, the cementite segregation at grain boundary in the partial recrystallization zone of the heat affected zone caused by the sharp change of microstructure should be responsible for the fatigue fracture of the smooth-welded specimen. The fatigue notch coefficient (Kf = 1.89) calculated by the effective notch stress method is consistent with that (Kf = 1.9) measured by the fatigue tests, which shows that the effective notch stress method can well evaluate the multiple notch effect under the coupling of the weld toe and the fish-scale pattern. Furthermore, the fatigue risk factor (Rf) model was employed to evaluate the fatigue performance of welded joint , the intuitive Rf curves show that the fatigue fracture occurs at the fatigue life exceeding 2 x 106 cycles, i.e., Rfmax exceeds 0.7. |
| 资助项目 | Jilin Province and Chinese Academy of Sciences[2020SYHZ0017] ; Fundamental Research Funds for the Central Universities[N2202003] ; National Natural Science Foundation of China (NSFC)[51871048] ; National Natural Science Foundation of China (NSFC)[52171108] ; Liaoning Revitalization Talents Program[XLYC1808027] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000892575800001 |
| 资助机构 | Jilin Province and Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; Liaoning Revitalization Talents Program |
| 源URL | [http://ir.imr.ac.cn/handle/321006/176037]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Q.; Zhang, Z. F.; Li, X. W. |
| 作者单位 | 1.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Wenhua Rd, Shenyang 110819, Peoples R China 2.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Wenhua Rd, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 4.CRRC Changchun Railway Vehicles CO LTD, 435 Qingyin Rd, Changchun 130062, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, D. Q. Q.,Yao, D. D.,Wang, Q.,et al. Evaluating the fatigue property of S355J2W steel butt-welded joint: Multiple notch effects[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,167:12. |
| APA | Wang, D. Q. Q.,Yao, D. D.,Wang, Q.,Gao, Z. B.,Zhang, Z. F.,&Li, X. W..(2023).Evaluating the fatigue property of S355J2W steel butt-welded joint: Multiple notch effects.INTERNATIONAL JOURNAL OF FATIGUE,167,12. |
| MLA | Wang, D. Q. Q.,et al."Evaluating the fatigue property of S355J2W steel butt-welded joint: Multiple notch effects".INTERNATIONAL JOURNAL OF FATIGUE 167(2023):12. |
入库方式： OAI收割
来源：金属研究所
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