Surface topography evolution of Ni-based single crystal superalloy under laser shock: Formation of the nano-scale surface reliefs

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	Surface topography evolution of Ni-based single crystal superalloy under laser shock: Formation of the nano-scale surface reliefs
	Lu, G. X. ; Liu, J. D. ; Qiao, H. C. ; Zhou, Y. Z. ; Jin, T. ; Sun, X. F. ; Hu, Z. Q.
刊名	APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
	2017-03-01
卷号	123 期号:3 页码:-
ISSN号	0947-8396
通讯作者	Liu, JD (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
中文摘要	The aim of the study was to investigate the effect of laser shock peening (LSP) on surface topography evolution of metallic targets. Samples manufactured by a Ni-based single crystal superalloy with polished finish were treated by LSP, and the surface topographies before and after LSP were examined by non-contact White-Light Interferometer (WLI). Results showed the following three aspects: (a) By taking advantage of WLI, the shrinkage porosities and the interdendritic structures were observed simultaneously. (b) With the increasing impact times, the round pit induced by laser shock became deeper. (c) The nano-scale surface reliefs were found on the bottom of round pit induced by LSP, and the specific plastic flow of metallic materials under the action of compressive stresses was deemed as the primary contributor to the formation of surface reliefs. It revealed a novel microscale plastic deformation phenomenon of metallic materials in surface strengthening.
学科主题	Materials Science, Multidisciplinary ; Physics, Applied
收录类别	SCI
资助信息	High Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China (NSFC) [51171179, 51271174, 51331005, 11332010]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78252]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Lu, G. X.,Liu, J. D.,Qiao, H. C.,et al. Surface topography evolution of Ni-based single crystal superalloy under laser shock: Formation of the nano-scale surface reliefs[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2017,123(3):-.
APA	Lu, G. X..,Liu, J. D..,Qiao, H. C..,Zhou, Y. Z..,Jin, T..,...&Hu, Z. Q..(2017).Surface topography evolution of Ni-based single crystal superalloy under laser shock: Formation of the nano-scale surface reliefs.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,123(3),-.
MLA	Lu, G. X.,et al."Surface topography evolution of Ni-based single crystal superalloy under laser shock: Formation of the nano-scale surface reliefs".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 123.3(2017):-.