Study on high-cycle fatigue fracture mechanism and strength prediction of RuT450

doi:10.1016/j.msea.2021.141599

CORC > 金属研究所 > 中国科学院金属研究所

	Study on high-cycle fatigue fracture mechanism and strength prediction of RuT450
	Zhang, Mengxiao 1; Pang, Jianchao 1; Meng, Lingjian 1; Li, Shouxin 1; Liu, Qingyi 2; Jiang, Ailong 2; Zhang, Zhefeng 1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-07-21
卷号	821 页码:9
关键词	Vermicular graphite cast iron Microstructures High-cycle fatigue Fracture mechanism Fatigue strength prediction
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.141599
通讯作者	Pang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
英文摘要	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.
资助项目	National Nature Science Foundation of China (NSFC)[51871224] ; Science Fund of State Key Laboratory of Engine Reliability (SKLER) ; LiaoNing Revitalization Talents Program[XLYC1808027]
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:000672446200001
资助机构	National Nature Science Foundation of China (NSFC) ; Science Fund of State Key Laboratory of Engine Reliability (SKLER) ; LiaoNing Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/160025]
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.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
推荐引用方式 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.