| The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate | |
| Zou, C. L.1,2; Pang, J. C.2; Chen, L. J.1; Li, S. X.2; Zhang, Z. F.2 | |
| Corresponding Author | Pang, J. C.(jcpang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 2020-06-01 | |
| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE
 |
| ISSN | 0142-1123 |
| Volume | 135Pages:11 |
| Abstract | The low cycle fatigue (LCF) damage mechanism and fatigue life of compacted graphite iron (CGI) at two strain rates were compared and analyzed at different temperatures. The results show that the strain rate has only little effect on the fatigue life of CGI at 25 degrees C, but the fatigue life reduces significantly with the decrease of strain rate at high temperatures (400 degrees C, 500 degrees C). The variation trend of fatigue life at 400 degrees C may be attributed to the initial cyclic hardening caused by the dynamic strain aging (DSA) effect combined with the serious damage localization of CGI. At 500 degrees C, the cyclic hardening is inhibited by serious oxidation. The fatigue life decreases with the decrease of strain rate can be ascribed to more oxidative damage and much serious grain boundary cracking. A prediction model for the fatigue life based on quadratic function relation was established through hysteresis energy and the variety of parameters (W-0, beta) was explained by the corresponding damage mechanism. The quadratic relationships between the parameters and temperature can effectively predict the variation tendency of fatigue life versus temperature (0-650 degrees C). |
| Keyword | Compacted graphite iron Low-cycle fatigue Strain rate Dynamic strain aging Fatigue damage localization Hysteresis energy |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; LiaoNing Revitalization Talents Program |
| DOI | 10.1016/j.ijfatigue.2020.105576 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[51871224] ; LiaoNing Revitalization Talents Program[XLYC1808027] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000525299400041 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138278 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Pang, J. C.; Zhang, Z. F. |
| Affiliation | 1.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliaoxi Rd, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Lab, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Zou, C. L.,Pang, J. C.,Chen, L. J.,et al. The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate[J]. INTERNATIONAL JOURNAL OF FATIGUE,2020,135:11. |
| APA | Zou, C. L.,Pang, J. C.,Chen, L. J.,Li, S. X.,&Zhang, Z. F..(2020).The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate.INTERNATIONAL JOURNAL OF FATIGUE,135,11. |
| MLA | Zou, C. L.,et al."The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate".INTERNATIONAL JOURNAL OF FATIGUE 135(2020):11. |
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