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Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening
Lu, G. X.; Liu, J. D.; Qiao, H. C.; Zhou, Y. Z.; Jin, T.; Sun, X. F.; Hu, Z. Q.; jdliu@imr.ac.cn
2016
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume658Pages:721-725
AbstractSurface topography and microhardness of a Ni-based single crystal superalloy subjected to laser shock peening (LSP) were investigated. So many morphological surface reliefs were found on the shocked surface, and a microscopic formation mechanism of those surface reliefs was proposed. The formation of surface reliefs can be attributed to the plastic deformation of gamma' precipitates and gamma matrix channels in the lateral or longitudinal directions. The nonuniformity of structures of the deformed surface layer was ascribed to the formation of surface reliefs. The microhardness of surface reliefs was higher than that of adjacent matrixes, so a nonuniformity of micromechanical properties coexisted on the surface of sample subjected to LSP. With the increase of LSP impact times, micromechanical properties difference between surface reliefs and adjacent matrixes widened due to a very high proportion of the longitudinal deformation of gamma' phases contained in the surface relief structures. (C) 2015 Elsevier B.V. All rights reserved.
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, shenyang 110016, peoples r china ; [qiao, h. c.] chinese acad sci, shenyang inst automat, shenyang 110016, peoples r china
KeywordSingle Crystal Superalloy Laser Shock Peening Surface Relief Microhardness
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/321006/75026
Collection中国科学院金属研究所
Corresponding Authorjdliu@imr.ac.cn
Recommended Citation
GB/T 7714
Lu, G. X.,Liu, J. D.,Qiao, H. C.,et al. Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,658:721-725.
APA Lu, G. X..,Liu, J. D..,Qiao, H. C..,Zhou, Y. Z..,Jin, T..,...&jdliu@imr.ac.cn.(2016).Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening.JOURNAL OF ALLOYS AND COMPOUNDS,658,721-725.
MLA Lu, G. X.,et al."Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening".JOURNAL OF ALLOYS AND COMPOUNDS 658(2016):721-725.
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