The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate

doi:10.1016/j.ijfatigue.2020.105576

IMR OpenIR

	The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate
	Zou, C. L.1,2; Pang, J. C.2; Chen, L. J.1; Li, S. X.2; Zhang, Z. F.2
通讯作者	Pang, J. C.(jcpang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2020-06-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	135 页码:11
摘要	The low cycle fatigue (LCF) damage mechanism and fatigue life of compacted graphite iron (CGI) at two strain rates were compared and analyzed at different temperatures. The results show that the strain rate has only little effect on the fatigue life of CGI at 25 degrees C, but the fatigue life reduces significantly with the decrease of strain rate at high temperatures (400 degrees C, 500 degrees C). The variation trend of fatigue life at 400 degrees C may be attributed to the initial cyclic hardening caused by the dynamic strain aging (DSA) effect combined with the serious damage localization of CGI. At 500 degrees C, the cyclic hardening is inhibited by serious oxidation. The fatigue life decreases with the decrease of strain rate can be ascribed to more oxidative damage and much serious grain boundary cracking. A prediction model for the fatigue life based on quadratic function relation was established through hysteresis energy and the variety of parameters (W-0, beta) was explained by the corresponding damage mechanism. The quadratic relationships between the parameters and temperature can effectively predict the variation tendency of fatigue life versus temperature (0-650 degrees C).
关键词	Compacted graphite iron Low-cycle fatigue Strain rate Dynamic strain aging Fatigue damage localization Hysteresis energy
资助者	National Natural Science Foundation of China (NSFC) ; LiaoNing Revitalization Talents Program
DOI	10.1016/j.ijfatigue.2020.105576
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[51871224] ; LiaoNing Revitalization Talents Program[XLYC1808027]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000525299400041
出版者	ELSEVIER SCI LTD
引用统计	被引频次：38[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/321006/138278
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.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliaoxi Rd, Shenyang 110870, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Lab, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zou, C. L.,Pang, J. C.,Chen, L. J.,et al. The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate[J]. INTERNATIONAL JOURNAL OF FATIGUE,2020,135:11.
APA	Zou, C. L.,Pang, J. C.,Chen, L. J.,Li, S. X.,&Zhang, Z. F..(2020).The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate.INTERNATIONAL JOURNAL OF FATIGUE,135,11.
MLA	Zou, C. L.,et al."The low-cycle fatigue property, damage mechanism and life prediction of compacted graphite iron: Influence of strain rate".INTERNATIONAL JOURNAL OF FATIGUE 135(2020):11.