| Study on high-cycle fatigue fracture mechanism and strength prediction of RuT450 | |
| Zhang, Mengxiao1; Pang, Jianchao1; Meng, Lingjian1; Li, Shouxin1; Liu, Qingyi2; Jiang, Ailong2; Zhang, Zhefeng1 | |
| Corresponding Author | Pang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn) |
| 2021-07-21 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 821Pages:9 |
| Abstract | Fatigue failure is the most common failure mode of structural materials. In this study, the high-cycle fatigue properties at different temperatures, fracture surface morphologies and corresponding damage mechanisms of a widely used vermicular graphite cast iron RuT450 were investigated. It is found that the fatigue strength values are 150 MPa, 143 MPa and 108 MPa for room temperature, 400 degrees C and 500 degrees C, respectively. The decrease rate of fatigue strength is affected by the change of morphology. At high temperature, the proportion of pearlite decreases and graphite becomes blunt. In general, the cracks initiate from the graphite phase boundary and propagate through the pearlite lamellae. In addition, according to the change of matrix micro-structure and crack growth processes under different temperature conditions, and by the quantitative analysis of micro-structure, the effect of temperature can be transformed into related parameters of matrix. Based on the changes, a fatigue strength prediction model for vermicular graphite cast iron at different temperatures was proposed, which predicts the trend well. |
| Keyword | Vermicular graphite cast iron Microstructures High-cycle fatigue Fracture mechanism Fatigue strength prediction |
| Funding Organization | National Nature Science Foundation of China (NSFC) ; Science Fund of State Key Laboratory of Engine Reliability (SKLER) ; LiaoNing Revitalization Talents Program |
| DOI | 10.1016/j.msea.2021.141599 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Nature Science Foundation of China (NSFC)[51871224] ; Science Fund of State Key Laboratory of Engine Reliability (SKLER) ; LiaoNing Revitalization Talents Program[XLYC1808027] |
| 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:000672446200001 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/160026 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Pang, Jianchao; Zhang, Zhefeng |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Weichai Power Co Ltd, Weifang 261061, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Mengxiao,Pang, Jianchao,Meng, Lingjian,et al. Study on high-cycle fatigue fracture mechanism and strength prediction of RuT450[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,821:9. |
| APA | Zhang, Mengxiao.,Pang, Jianchao.,Meng, Lingjian.,Li, Shouxin.,Liu, Qingyi.,...&Zhang, Zhefeng.(2021).Study on high-cycle fatigue fracture mechanism and strength prediction of RuT450.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,821,9. |
| MLA | Zhang, Mengxiao,et al."Study on high-cycle fatigue fracture mechanism and strength prediction of RuT450".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 821(2021):9. |
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