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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(卢国鑫); 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)
Department装备制造技术研究室
Source PublicationApplied Physics A: Materials Science and Processing
ISSN0947-8396
2017
Volume123Issue:3Pages:1-10
Indexed BySCI ; EI
EI Accession number20171003421285
WOS IDWOS:000397576400033
Contribution Rank2
Funding OrganizationHigh Technology Research and Development Program of China (No.2014AA041701) and the National Natural Science Foundation of China (NSFC) under Grant Nos. 51171179, 51271174, 51331005, and 11332010.
Abstract

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.

Language英语
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied
WOS KeywordForeign Object Damage ; Residual-stress ; Monocrystalline Copper ; Fatigue Behavior ; Alloy ; Compression ; Temperature ; Microstructure ; Ti-6al-4v
WOS Research AreaMaterials Science ; Physics
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/20208
Collection智能产线与系统研究室
Corresponding AuthorLiu JD(刘纪德)
Affiliation1.Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
2.Shenyang Institute of Automation, Chinese Academy of Sciences, 114 Nanta Road, Shenyang 110016, China
3.University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
Recommended Citation
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.
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