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, GX; Liu JD(刘纪德); Qiao HC(乔红超); Zhou YZ(周亦胄); Jin T(金涛); Sun XF(孙晓峰); Hu ZQ(胡壮麒)
刊名	Applied Physics A: Materials Science and Processing
	2017
卷号	123 期号:3 页码:1-10
ISSN号	0947-8396
通讯作者	刘纪德
产权排序	2
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.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]	Materials Science ; Physics
关键词[WOS]	FOREIGN OBJECT DAMAGE ; RESIDUAL-STRESS ; MONOCRYSTALLINE COPPER ; FATIGUE BEHAVIOR ; ALLOY ; COMPRESSION ; TEMPERATURE ; MICROSTRUCTURE ; TI-6AL-4V
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000397576400033
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/20208]
专题	沈阳自动化研究所_装备制造技术研究室
推荐引用方式 GB/T 7714	Lu, GX,Liu JD,Qiao HC,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 and Processing,2017,123(3):1-10.
APA	Lu, GX.,Liu JD.,Qiao HC.,Zhou YZ.,Jin T.,...&Hu ZQ.(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 and Processing,123(3),1-10.
MLA	Lu, GX,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 and Processing 123.3(2017):1-10.