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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.; Liu, JD (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2017-03-01
Source PublicationAPPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
ISSN0947-8396
Volume123Issue:3Pages:-
AbstractThe 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.
description.department[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
Subject AreaMaterials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationHigh Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China (NSFC) [51171179, 51271174, 51331005, 11332010]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78252
Collection中国科学院金属研究所
Corresponding AuthorLiu, JD (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
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):-.
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