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Nonuniformity of morphology and mechanical properties on the surface of single crystal superalloy subjected to laser shock peening
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 PublicationJournal of Alloys and Compounds
ISSN0925-8388
2016
Volume658Pages:721-725
Indexed BySCI ; EI
EI Accession number20154701590224
WOS IDWOS:000366940100100
Contribution Rank2
Funding OrganizationHigh Technology Research and Development Program of China (No. 2014AA041701) and the National Natural Science Foundation of China (NSFC) under Grant No. 51171179, 51271174, 51331005, and 11332010.
KeywordSingle Crystal Superalloy Laser Shock Peening Surface Relief Microhardness
Abstract

Surface 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 γ' precipitates and γ 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 γ' phases contained in the surface relief structures.

Language英语
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS KeywordAustenitic Stainless-steel ; Fracture-toughness ; Aluminum-alloy ; Fatigue ; Growth ; Microstructure ; Roughness ; Integrity ; Behavior
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/17315
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, China
2.Shenyang Institute of Automation, Chinese Academy of Sciences, 114 Nanta Road, Shenyang, China
Recommended Citation
GB/T 7714
Lu GX,Liu JD,Qiao HC,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 GX.,Liu JD.,Qiao HC.,Zhou YZ.,Jin T.,...&Hu ZQ.(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 GX,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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