Improved fatigue resistance of gradient nanograined Cu

doi:10.1016/j.actamat.2018.12.018

IMR OpenIR

	Improved fatigue resistance of gradient nanograined Cu
	Long, Jianzhou 1; Pan, Qingsong 1; Tao, Nairong 1; Dao, Ming 2; Suresh, Subra 3; Lu, Lei 1
通讯作者	Suresh, Subra(ssuresh@ntu.edu.sg) ; Lu, Lei(llu@imr.ac.cn)
	2019-03-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	166 页码:56-66
摘要	Cyclic stresses generally lead to fatigue damage and failure with important implications for material and component design, safety, performance and lifetime costs in major structural applications. Here we present unique results for copper to demonstrate that a thin superficial layer of graded surface nanostructure over a coarse-grained core suppresses strain localization and surface roughening, thereby imparting unprecedented resistance to both low-cycle and high-cycle fatigue without compromising ductility. Progressive homogenization of the surface-graded copper is shown to be superior in fatigue properties compared to that of any of its homogeneous counterparts with micro-, submicro- or nanograined structures. Since the findings here for enhancing resistance to fatigue are broadly applicable to a wide spectrum of engineering metals and alloys, the present results offer unique pathways to mitigate fatigue damage using a broad variety of processing routes, geometric design considerations, and structural parameters in many practical applications. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	Graded nanostructures Surface engineering Fatigue resistance Surface roughening Microstructural convergence
资助者	National Science Foundation of China ; Key Research Program of Frontier Science, CAS ; Distinguished University Professorship at Nanyang Technological University, Singapore
DOI	10.1016/j.actamat.2018.12.018
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[51420105001] ; National Science Foundation of China[51471172] ; National Science Foundation of China[U1608257] ; Key Research Program of Frontier Science, CAS ; Distinguished University Professorship at Nanyang Technological University, Singapore
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000459358200006
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：88[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/321006/131964
专题	中国科学院金属研究所
通讯作者	Suresh, Subra; Lu, Lei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA 3.Nanyang Technol Univ, Singapore 639798, Singapore
推荐引用方式 GB/T 7714	Long, Jianzhou,Pan, Qingsong,Tao, Nairong,et al. Improved fatigue resistance of gradient nanograined Cu[J]. ACTA MATERIALIA,2019,166:56-66.
APA	Long, Jianzhou,Pan, Qingsong,Tao, Nairong,Dao, Ming,Suresh, Subra,&Lu, Lei.(2019).Improved fatigue resistance of gradient nanograined Cu.ACTA MATERIALIA,166,56-66.
MLA	Long, Jianzhou,et al."Improved fatigue resistance of gradient nanograined Cu".ACTA MATERIALIA 166(2019):56-66.