Fatigue strength optimization of gray cast iron processed by different austempering temperatures

doi:10.1016/j.ijfatigue.2023.107831

IMR OpenIR

	Fatigue strength optimization of gray cast iron processed by different austempering temperatures
	Teng, X. Y.1,3; Pang, J. C.1; Liu, F.2,3; Zou, C. L.1; Gao, C.1; Li, S. X.1; Zhang, Z. F.1
通讯作者	Pang, J. C.(jcpang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2023-10-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	175 页码:14
摘要	It is generally accepted that the mechanical properties of gray cast iron (GCI) can be enhanced by microstructure refinement, while this perhaps needs to be reconsidered to improve the fatigue properties treated by aus-tempering technology. Although the maximum tensile strength can be up to 480 MPa for austempered gray iron (AGI) with finer bainite fabricated by austempering transformations, the value of fatigue strength is less than the coarse counterpart with lower tensile strength. This suggests that tensile strength can be effectively improved by microstructure refinement, while fatigue cannot. It is mainly attributed to the initial defects induced by graphite and the structural toughness increased by austenite in AGI. Therefore, the general relationship between tensile strength and fatigue strength of GCI and AGI was investigated and the roles of fitting parameters were analyzed. The inverted relation provides some new insights into the fatigue strength optimization of GCI.
关键词	Gray cast iron Austempering temperature Microstructures Tensile strength Fatigue strength
资助者	National Natural Science Foundation of China (NSFC)
DOI	10.1016/j.ijfatigue.2023.107831
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[51871224] ; National Natural Science Foundation of China (NSFC)[52130002]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001038329300001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：6[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/321006/178778
专题	中国科学院金属研究所
通讯作者	Pang, J. C.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Jihua Lab, Foshan 528200, Peoples R China 3.Liaoning Petrochem Univ, Sch Mech Engn, 1 Dandong Rd, Fushun 113001, Peoples R China
推荐引用方式 GB/T 7714	Teng, X. Y.,Pang, J. C.,Liu, F.,et al. Fatigue strength optimization of gray cast iron processed by different austempering temperatures[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,175:14.
APA	Teng, X. Y..,Pang, J. C..,Liu, F..,Zou, C. L..,Gao, C..,...&Zhang, Z. F..(2023).Fatigue strength optimization of gray cast iron processed by different austempering temperatures.INTERNATIONAL JOURNAL OF FATIGUE,175,14.
MLA	Teng, X. Y.,et al."Fatigue strength optimization of gray cast iron processed by different austempering temperatures".INTERNATIONAL JOURNAL OF FATIGUE 175(2023):14.