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

IMR OpenIR

	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.; Liu, JD (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2017-03-01
发表期刊	APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
ISSN	0947-8396
卷号	123 期号:3 页码:-
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.; 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.
部门归属	[lu, g. x. ; liu, j. d. ; zhou, y. z. ; jin, t. ; sun, x. f. ; hu, z. q.] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china ; [qiao, h. c.] chinese acad sci, shenyang inst automat, 114 nanta rd, shenyang 110016, peoples r china ; [lu, g. x.] univ chinese acad sci, 19 yuquan rd, beijing 100049, peoples r china
学科领域	Materials Science, Multidisciplinary ; Physics, Applied
资助者	High Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China (NSFC) [51171179, 51271174, 51331005, 11332010]
收录类别	SCI
语种	英语
WOS记录号	WOS:000397576400033
引用统计	被引频次：5[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/321006/78252
专题	中国科学院金属研究所
通讯作者	Liu, JD (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
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..,...&Liu, JD .(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):-.