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High-cycle fatigue properties prediction and damage mechanisms of RuT400 compacted graphite iron at different temperatures

文献类型：期刊论文

作者Liu, Qingyi2; Zhu, Gang1,3; Pang, Jianchao3; Liu, Feng1; Li, Shouxin3; Guo, Changliang2; Jiang, Ailong2; Zhang, Zhefeng3
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2019-09-09
卷号764页码:10
ISSN号0921-5093
关键词Compacted graphite iron High-cycle fatigue Damage mechanism Prediction method
DOI10.1016/j.msea.2019.138248
通讯作者Pang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
英文摘要As a new type of cylinder head material, the mechanical properties of RuT400 compacted graphite iron (CGI) are particular critical for its industrial application. In this study, the tensile and high-cycle fatigue (HCF) tests of RuT400 were performed at 25, 300, 400 and 500 degrees C, respectively. Meanwhile, the original microstructure, hardness (HV) and damage features of typical fatigue fractured specimens at each temperature were investigated. It is found that, with the temperature increasing, the tensile and yield strengths decrease slightly first and then rapidly, while, the fatigue strength increases first and then drastically reduces. Several different analyses indicate that the variation of fatigue strength due to the matrix microstructure changing. Besides, a new prediction method of fatigue properties was proposed, it can reasonably predict the HCF properties for CGI at any temperatures. These results will enrich the understanding on the strength improvement of the CGI.
资助项目Science Fund of State Key Laboratory of Engine Reliability (SKLER)[201711] ; National Nature Science Foundation of China (NSCF)[51871224]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000486360100053
资助机构Science Fund of State Key Laboratory of Engine Reliability (SKLER) ; National Nature Science Foundation of China (NSCF)
源URL[http://ir.imr.ac.cn/handle/321006/135449]  
专题金属研究所_中国科学院金属研究所
通讯作者Pang, Jianchao; Zhang, Zhefeng
作者单位1.Liaoning Shihua Univ, Sch Mech Engn, 1 Dandong Rd, Fushun 113001, Peoples R China
2.Weichai Power Co Ltd, State Key Lab Engine Reliabil, 197A Fushou East St, Weifang 261061, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Lab, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Qingyi,Zhu, Gang,Pang, Jianchao,et al. High-cycle fatigue properties prediction and damage mechanisms of RuT400 compacted graphite iron at different temperatures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,764:10.
APA Liu, Qingyi.,Zhu, Gang.,Pang, Jianchao.,Liu, Feng.,Li, Shouxin.,...&Zhang, Zhefeng.(2019).High-cycle fatigue properties prediction and damage mechanisms of RuT400 compacted graphite iron at different temperatures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,764,10.
MLA Liu, Qingyi,et al."High-cycle fatigue properties prediction and damage mechanisms of RuT400 compacted graphite iron at different temperatures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 764(2019):10.

入库方式： OAI收割

来源：金属研究所

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