Comparative responses of welded joints to surface mechanical attrition treatment and shot peening

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	Comparative responses of welded joints to surface mechanical attrition treatment and shot peening
	D. Li; H. N. Chen; H. Xu
	2009
发表期刊	Surface Engineering
ISSN	0267-0844
卷号	25 期号:1 页码:15-20
摘要	Responses of welded joint of carbon steel to surface mechanical attrition treatment (SMAT) and shot peening (SP) were investigated. Experimental evidences showed that the microstructure of treated surface in the welded joint by means of SMAT was characterised by nanometre grains of about 13.6 nm in size and that of SP was characterised by highly dense dislocation configuration. The similar microhardness profiles with different peak values in the top surface were observed for three typical zones of welded joints processed by SMAT and SP. Compared with as welded specimens, SMAT and SP processes have improved the fatigue strength by as much as 61 and 36.3% respectively based on fatigue life 2 x 10(6) cycles. The observed enhanced fatigue behaviours of the welded joint processed by SMAT and SP should be attributed to the combined influences of compressive residual stress, work hardening, nanostructure and elimination of microdiscontinuities in the vicinity of welded joints.
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), e china univ sci & technol, state key lab chem engn, sch mech & power engn, shanghai 200237, peoples r china;dli@ecust.edu.cn
关键词	Surface Mechanical Attrition Treatment Shot Peening Nanostructured Surface Welded Joint Fatigue Behaviour Severe Plastic-deformation Fatigue-crack Growth Metallic Materials Layer Improvement Strength Behavior Steel Alloy Life
URL	查看原文
WOS记录号	WOS:000264352200003
引用统计	被引频次：12[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/321006/32013
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. Comparative responses of welded joints to surface mechanical attrition treatment and shot peening[J]. Surface Engineering,2009,25(1):15-20.
APA	D. Li,H. N. Chen,&H. Xu.(2009).Comparative responses of welded joints to surface mechanical attrition treatment and shot peening.Surface Engineering,25(1),15-20.
MLA	D. Li,et al."Comparative responses of welded joints to surface mechanical attrition treatment and shot peening".Surface Engineering 25.1(2009):15-20.