The effect of nanostructured surface layer on the fatigue behaviors of a carbon steel

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	The effect of nanostructured surface layer on the fatigue behaviors of a carbon steel
	D. Li; H. N. Chen; H. Xu
	2009
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	255 期号:6 页码:3811-3816
摘要	A nanostructured surface layer was formed on a carbon steel by means of surface mechanical attrition treatment (SMAT). The microstructure of the surface layer of the SMATed sample was characterized by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Microhardness and residual stress distribution along the depth from the SMATed surface layer were measured at the same time. Fatigue behaviors of the carbon steel subjected to the SMAT process were investigated. A nanostructured layer with average grains size of similar to 12.7 nm was formed, of which microhardness is more than twice as high as that in matrix and residual compressive stress can reach about -400 MPa with maximum depth of similar to 600 mm. The fatigue strength of as-received sample is 267 MPa and that of SMATed sample is 302 MPa based on fatigue life 5 x 10(6) cycles. The SMAT process has improved the fatigue strength by as much as 13.1% for the carbon steel. It is shown that the SMAT is an effective method to render the material with the features, such as a nanostructured and work-hardened surface layer as well as compressive residual stresses, which can pronouncedly improve the fatigue strength of the carbon steel. (c) 2008 Elsevier B.V. All rights reserved.
部门归属	[li, d.; xu, h.] e china univ sci & technol, state key lab chem engn, sch mech & power engn, shanghai 200237, peoples r china. [chen, h. n.] chinese acad sci, inst met res, shenyang 110016, peoples r china.;li, d (reprint author), 130 meilong rd,mail box 402, shanghai 200237, peoples r china;dli@ecust.edu.cn
关键词	Surface Mechanical Attrition Treatment Carbon Steel Nanostructured Surface Layer Fatigue Behavior Mechanical Attrition Treatment Severe Plastic-deformation Induced Grain-refinement Residual-stress Stainless-steel Nanometer-scale Copper Nanocrystallization 304-stainless-steel Friction
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WOS记录号	WOS:000261972100059
引用统计	被引频次：100[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/321006/32012
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. Li,H. N. Chen,H. Xu. The effect of nanostructured surface layer on the fatigue behaviors of a carbon steel[J]. Applied Surface Science,2009,255(6):3811-3816.
APA	D. Li,H. N. Chen,&H. Xu.(2009).The effect of nanostructured surface layer on the fatigue behaviors of a carbon steel.Applied Surface Science,255(6),3811-3816.
MLA	D. Li,et al."The effect of nanostructured surface layer on the fatigue behaviors of a carbon steel".Applied Surface Science 255.6(2009):3811-3816.