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

doi:10.1016/j.msea.2021.141599

IMR OpenIR

	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
通讯作者	Pang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
	2021-07-21
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	821 页码:9
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.
关键词	Vermicular graphite cast iron Microstructures High-cycle fatigue Fracture mechanism Fatigue strength prediction
资助者	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
收录类别	SCI
语种	英语
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
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000672446200001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160026
专题	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.