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The main factor influencing the tensile properties of surface nano-crystallized graded materials
Li JJ(李建军); Chen SH(陈少华); Wu XL(武晓雷); Soh A; Lu JA; Chen SH
Source PublicationMaterials Science and Engineering A-Structural Materials Properties Microstructure and Processing
2010
Volume527Issue:26Pages:7040-7044
ISSN0921-5093
AbstractThe improved mechanical properties of surface nano-crystallized graded materials produced by surface severe plastic deformation ((SPD)-P-2) are generally owing to the effects of the refined structure, work-hardened region and compressive residual stress. However, during the (SPD)-P-2 process, residual stress is produced simultaneously with work-hardened region, the individual contribution of these two factors to the improved mechanical properties remains unclear. Numerical simulations are carried out in order to answer this question. It is found that work hardening predominates in improving the yield strength and the ultimate tensile strength of the surface nano-crystallized graded materials, while the influence of the residual stress mainly emerges at the initial stage of deformation and decreases the apparent elastic modulus of the surface nano-crystallized graded materials, which agrees well with the experimental results. (C) 2010 Elsevier B.V. All rights reserved.
KeywordSurface Nano-crystallized Graded Material Residual Stress Work Hardening Finite Element Method Mechanical Attrition Treatment Severe Plastic-deformation Kelvin Probing Technique Stainless-steel Nanocrystalline Surface Fatigue Resistance Residual-stresses Ultrafine Grain Yield Strain Nickel-alloy
DOI10.1016/j.msea.2010.07.064
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Indexed BySCI
Language英语
WOS IDWOS:000283113200034
WOS KeywordMECHANICAL ATTRITION TREATMENT ; SEVERE PLASTIC-DEFORMATION ; KELVIN PROBING TECHNIQUE ; STAINLESS-STEEL ; NANOCRYSTALLINE SURFACE ; FATIGUE RESISTANCE ; RESIDUAL-STRESSES ; ULTRAFINE GRAIN ; YIELD STRAIN ; NICKEL-ALLOY
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNSFC [10972220, 10732050, 10721202] ; CAS [KJCX2-YW-M04] ; [PolyU7/CRF/08]
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43453
Collection非线性力学国家重点实验室
Corresponding AuthorChen SH
Recommended Citation
GB/T 7714
Li JJ,Chen SH,Wu XL,et al. The main factor influencing the tensile properties of surface nano-crystallized graded materials[J]. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,2010,527(26):7040-7044.
APA 李建军,陈少华,武晓雷,Soh A,Lu JA,&Chen SH.(2010).The main factor influencing the tensile properties of surface nano-crystallized graded materials.Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,527(26),7040-7044.
MLA 李建军,et al."The main factor influencing the tensile properties of surface nano-crystallized graded materials".Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 527.26(2010):7040-7044.
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