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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)
作者部门装备制造技术研究室
发表期刊Applied Physics A: Materials Science and Processing
ISSN0947-8396
2017
卷号123期号:3页码:1-10
收录类别SCI ; EI
EI收录号20171003421285
WOS记录号WOS:000397576400033
产权排序2
资助机构High 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.
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.

语种英语
WOS标题词Science & Technology ; Technology ; Physical Sciences
WOS类目Materials Science, Multidisciplinary ; Physics, Applied
关键词[WOS]Foreign Object Damage ; Residual-stress ; Monocrystalline Copper ; Fatigue Behavior ; Alloy ; Compression ; Temperature ; Microstructure ; Ti-6al-4v
WOS研究方向Materials Science ; Physics
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/20208
专题装备制造技术研究室
通讯作者Liu JD(刘纪德)
作者单位1.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
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.
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