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

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2020-06-01
卷号	135 页码:11
关键词	Compacted graphite iron Low-cycle fatigue Strain rate Dynamic strain aging Fatigue damage localization Hysteresis energy
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2020.105576
通讯作者	Pang, J. C.(jcpang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
英文摘要	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).
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
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000525299400041
资助机构	National Natural Science Foundation of China (NSFC) ; LiaoNing Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138279]
专题	金属研究所_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.