Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime

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	Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime
	Z. G. Yang; S. X. Li; Y. B. Liu; Y. D. Li; G. Y. Li; W. J. Hui; Y. Q. Weng
	2008
发表期刊	International Journal of Fatigue
ISSN	0142-1123
卷号	30 期号:6 页码:1016-1023
摘要	The sizes of the "granular bright facet' (GBF) areas on fracture surfaces of specimens subjected to very high cycle fatigue for two high strength spring steels were measured in a field emission scanning electron microscope (FESEM) and compared with the estimated values, and a good agreement was found between the two sets of data. A criterion was proposed to estimate the sizes of GBF areas. It was assumed that when the increment of crack length in one applied stress cycle (numerically equal to crack growth rate, da/dN) is just equal to the plastic zone size in front of crack tip, r(p), the GBF stops developing. It means that hydrogen accumulating in the plastic zone under applied stress influences mostly on the fatigue behaviors which results in the morphology of GBF area quite different from the conventional fatigue fracture surface. The estimated sizes of GBF areas were also in accordance with the sizes measured from fracture surfaces of other high strength steels provided that the hydrogen concentration in those steels was not much higher than that in present spring steels. (c) 2007 Elsevier Ltd. All rights reserved.
部门归属	[yang, z. g.; li, s. x.; liu, y. b.; li, y. d.; li, g. y.] chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. [hui, w. j.; weng, y. q.] cent iron & steel res inst, beijing 100081, peoples r china.;yang, zg (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china;zhgyang@imr.ac.cn
关键词	High Strength Steel Very High Cycle Fatigue Granular Bright Facet (Gbf) Hydrogen The Maximum Size Of The Plastic Zone Fatigue Crack Growth Rate Subsurface Crack Initiation Chromium-bearing Steel Long-life Fatigue N-greater-than-10(7) Cycles Part Ii Mechanism Failure Hydrogen Inclusions Behavior
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WOS记录号	WOS:000255068800007
引用统计	被引频次：56[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/321006/33280
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. G. Yang,S. X. Li,Y. B. Liu,et al. Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime[J]. International Journal of Fatigue,2008,30(6):1016-1023.
APA	Z. G. Yang.,S. X. Li.,Y. B. Liu.,Y. D. Li.,G. Y. Li.,...&Y. Q. Weng.(2008).Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime.International Journal of Fatigue,30(6),1016-1023.
MLA	Z. G. Yang,et al."Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime".International Journal of Fatigue 30.6(2008):1016-1023.