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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 AuthorPang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
2021-07-21
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume821Pages:9
AbstractFatigue 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.
KeywordVermicular graphite cast iron Microstructures High-cycle fatigue Fracture mechanism Fatigue strength prediction
Funding OrganizationNational Nature Science Foundation of China (NSFC) ; Science Fund of State Key Laboratory of Engine Reliability (SKLER) ; LiaoNing Revitalization Talents Program
DOI10.1016/j.msea.2021.141599
Indexed BySCI
Language英语
Funding ProjectNational Nature Science Foundation of China (NSFC)[51871224] ; Science Fund of State Key Laboratory of Engine Reliability (SKLER) ; LiaoNing Revitalization Talents Program[XLYC1808027]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000672446200001
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160026
Collection中国科学院金属研究所
Corresponding AuthorPang, Jianchao; Zhang, Zhefeng
Affiliation1.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
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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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