| A new fatigue crack growth mechanism of high-strength steels | |
| Li, H. F.1,2; Zhang, P.1; Zhang, Z. F.1 | |
| Corresponding Author | Zhang, P.(pengzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 2022-04-18 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 840Pages:9 |
| Abstract | In this study, the fatigue crack damage evolution procedure of AISI 4340 high-strength steel was systematically studied via three-dimensional X-ray technology and scanning electron microscopy. Based on the experimental results and theoretical analysis, a new FCG mechanism is proposed, i.e. the blunting and re-sharpening to microscale void coalescence (BRS-MVC) mixed mechanism. Few micro-scale voids initiated near the crack tip are surrounded by the blunting crack tip at low Delta K zone, which is controlled by the BRS mechanism. More microscale void clusters would occur around the crack tip at high Delta K zone, which may be attributed to the MVC mechanism. The new FCG mechanism provides a unique perspective for the FCG behavior of high-strength steels, which could promote the fatigue life prediction of metallic materials. |
| Keyword | Fatigue crack growth Three-dimensional X-ray High-strength steels Mixed mechanism |
| Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; LiaoNing Revitalization Talents Program ; Youth Innovation Pro-motion Association CAS |
| DOI | 10.1016/j.msea.2022.142969 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[12102275] ; National Natural Science Foundation of China[52130002] ; National Natural Science Foundation of China[U1664253] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020202] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04040502] ; LiaoNing Revitalization Talents Program[XLYC1808027] ; Youth Innovation Pro-motion Association CAS[2018226] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000781373400003 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172876 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, P.; Zhang, Z. F. |
| Affiliation | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China |
| Recommended Citation GB/T 7714 | Li, H. F.,Zhang, P.,Zhang, Z. F.. A new fatigue crack growth mechanism of high-strength steels[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,840:9. |
| APA | Li, H. F.,Zhang, P.,&Zhang, Z. F..(2022).A new fatigue crack growth mechanism of high-strength steels.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,840,9. |
| MLA | Li, H. F.,et al."A new fatigue crack growth mechanism of high-strength steels".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 840(2022):9. |
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