Low cycle fatigue behavior and failure mechanism of 34CrNiMo6 steel used as connecting rod for diesel engine

doi:10.1088/1742-6596/2842/1/012056

IMR OpenIR

	Low cycle fatigue behavior and failure mechanism of 34CrNiMo6 steel used as connecting rod for diesel engine
	Wang,Zengquan 1; Zhao,Guangshuo 2,3; Jing,Guoxi 2,3; Zhang,Liqiang 1; Hou,Yexing 1; Pang,Jianchao 4
通讯作者	Jing,Guoxi()
	2024-09-01
发表期刊	Journal of Physics: Conference Series
ISSN	1742-6588
卷号	2842 期号:1
摘要	Abstract In this paper, for the 34CrNiMo6 steel material used in diesel engine connecting rods, the low-cycle fatigue properties and failure mechanism were studied. The metallographic structure of 34CrNiMo6 has been investigated by using optical microscopes, scanning electron microscopes, and transmission electron microscopes. Tensile tests and low-cycle fatigue experiments were performed at different levels of strain amplitudes, and the microstructural changes were monitored. The examination indicates that the structure of 34CrNiMo6 steel consisted primarily of a ferrite base and small spherical and rod-shaped carbides, with a mean particle size measuring 2 μm. It had exceptional mechanical characteristics of high strength and moderate plasticity. The total strain amplitude (TSA) of 34CrNiMo6 steel affected the cycling behavior, which was stable at low TSA (0.2% ~ 0.3%). At high TSA (0.4% ~ 0.7%), a large number of dislocations were annihilated through the dynamic recovery process, showing a typical cyclic softening phenomenon. The low-cycle fatigue failure behavior was mainly a combined mode of quasi-cleavage fracture and cross-grain fracture.
DOI	10.1088/1742-6596/2842/1/012056
语种	英语
WOS记录号	IOP:JPCS_2842_1_012056
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180105
专题	中国科学院金属研究所
通讯作者	Jing,Guoxi
作者单位	1.China North Engine Research Institute, Tianjin 300400, China 2.Tianjin Key Laboratory of New Energy Automobile Power Transmission and Safety Technology, School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China 3.School of Mechanical Engineering, Hebei University of Technology, Tianjin 300400, China 4.Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
推荐引用方式 GB/T 7714	Wang,Zengquan,Zhao,Guangshuo,Jing,Guoxi,et al. Low cycle fatigue behavior and failure mechanism of 34CrNiMo6 steel used as connecting rod for diesel engine[J]. Journal of Physics: Conference Series,2024,2842(1).
APA	Wang,Zengquan,Zhao,Guangshuo,Jing,Guoxi,Zhang,Liqiang,Hou,Yexing,&Pang,Jianchao.(2024).Low cycle fatigue behavior and failure mechanism of 34CrNiMo6 steel used as connecting rod for diesel engine.Journal of Physics: Conference Series,2842(1).
MLA	Wang,Zengquan,et al."Low cycle fatigue behavior and failure mechanism of 34CrNiMo6 steel used as connecting rod for diesel engine".Journal of Physics: Conference Series 2842.1(2024).