Ultra high cycle fatigue behavior of automotive high strength spring steels 54SiCrV6 and 54SiCr6

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	Ultra high cycle fatigue behavior of automotive high strength spring steels 54SiCrV6 and 54SiCr6
	Zhang, JM ; Yang, ZG ; Li, SX ; Li, GY ; Hui, WJ ; Weng, YQ
刊名	ACTA METALLURGICA SINICA
	2006-03-01
卷号	42 期号:3 页码:259-264
关键词	high strength spring steel ultra high cycle fatigue S-N curve fatigue limit inclusion cluster
ISSN号	0412-1961
通讯作者	Zhang, JM(jmzhang@imr.ac.cn)
英文摘要	Ultra high cycle fatigue behaviors of 54SiCrV6 and 54SiCr6 clear high strength spring steels were investigated and their fractographs were observed by means of field emission scanning electron microscope (FESEM) and electron probe microanalyzer (EPMA). Experimental results show that for the two steels, the fatigue failures originated from the matrix of sample surface at high stress amplitude and from sample interior at low stress amplitude. The S-N curve of 54SiCrV6 spring steel is a typical step-wise curve, and the fatigue limit eliminated in 10(9) cyc regime, however, the fatigue limit of 54SiCr6 steel still existed. Analysis of fractographs shows that the internal failure initiated at clusters of small inclusions for 54SiCrV6 steel or at carbides for 54SiCr6 steel. An estimation of critical inclusion size shows that in 10(9) cycles regime, the fatigue limit eliminated when inclusion (or inclusion clusters) size is greater than a critical size in high strength steel.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000236556500006
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/86966]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, JM
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhang, JM,Yang, ZG,Li, SX,et al. Ultra high cycle fatigue behavior of automotive high strength spring steels 54SiCrV6 and 54SiCr6[J]. ACTA METALLURGICA SINICA,2006,42(3):259-264.
APA	Zhang, JM,Yang, ZG,Li, SX,Li, GY,Hui, WJ,&Weng, YQ.(2006).Ultra high cycle fatigue behavior of automotive high strength spring steels 54SiCrV6 and 54SiCr6.ACTA METALLURGICA SINICA,42(3),259-264.
MLA	Zhang, JM,et al."Ultra high cycle fatigue behavior of automotive high strength spring steels 54SiCrV6 and 54SiCr6".ACTA METALLURGICA SINICA 42.3(2006):259-264.