The effect of inclusions on the fatigue behavior of fine-grained high strength 42CrMoVNb steel

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	The effect of inclusions on the fatigue behavior of fine-grained high strength 42CrMoVNb steel
	Z. G. Yang; G. Yao; G. Y. Li; S. X. Li; Z. M. Chu; W. J. Hui; H. Dong; Y. Q. Weng
	2004
发表期刊	International Journal of Fatigue
ISSN	0142-1123
卷号	26 期号:9 页码:959-966
摘要	The fatigue properties of high strength 42CrMoVNb steel with three fine grain sizes produced by different heat treatment procedures are studied in this paper. The experimental results illustrate that there is no horizontal asymptote in fatigue S-N curves for smooth specimens at 10(6)-10(7) cycles regime, hence the conventional fatigue limit eliminates. The fatigue crack initiation sites in smooth specimens were related closely to fatigue life, and most of the fracture origins initiated at the inclusions. The diameters and locations of these inclusions were measured, and their morphology was observed in SEM. The critical size of inclusion and the appropriate grain size of prior austenite, which should be controlled in practical production, are obtained by analyzing the experimental data. (C) 2004 Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. beijing res inst mech & elect technol, beijing 100083, peoples r china. 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 42crmovnb Steel Fine Grain Inclusion Fatigue Strength Fatigue Crack Initiation Site Regime N-greater-than-10(7) Cycles Failure Mechanism
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WOS记录号	WOS:000222739400006
引用统计	被引频次：41[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/321006/35677
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. G. Yang,G. Yao,G. Y. Li,et al. The effect of inclusions on the fatigue behavior of fine-grained high strength 42CrMoVNb steel[J]. International Journal of Fatigue,2004,26(9):959-966.
APA	Z. G. Yang.,G. Yao.,G. Y. Li.,S. X. Li.,Z. M. Chu.,...&Y. Q. Weng.(2004).The effect of inclusions on the fatigue behavior of fine-grained high strength 42CrMoVNb steel.International Journal of Fatigue,26(9),959-966.
MLA	Z. G. Yang,et al."The effect of inclusions on the fatigue behavior of fine-grained high strength 42CrMoVNb steel".International Journal of Fatigue 26.9(2004):959-966.