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Cylindrical nano-indentation on metal film/elastic substrate system with discrete dislocation plasticity analysis: A simple model for nano-indentation size effect
Ouyang, Chaojun1,3; Li, Zhenhuan1,2; Huang, Minsheng1,2; Fan, Haidong1,2
Corresponding AuthorLi, ZH
2010
Source PublicationINTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
ISSN0020-7683
EISSN1879-2146
Volume47Issue:22-23Pages:3103-3114
SubtypeArticle
AbstractThe cylindrical nano-indentation on metal film/elastic substrate is computationally studied using two-dimensional discrete dislocation plasticity combined with the commercial software ANSYS (R), with a focus on the storage volume for geometrically necessary dislocations (GNDs) inside the films and the nano-indentation size effect (NISE). Our calculations show that almost all GNDs are stored in a rectangular area determined by the film thickness and the actual contact width. The variations of indentation contact width with indentation depth for various film thicknesses and indenter radii are fitted by an exponential relation, and then the GND density underneath the indenter is estimated. Based on the Taylor dislocation model and Tabor formula, a simple model for the dependence of the nano-indentation hardness of the film/substrate system on the indentation depth, the indenter radius and the film thickness is established, showing a good agreement with the present numerical results. (C) 2010 Published by Elsevier Ltd.
KeywordFilm/substrate System Indentation Size Effect Discrete Dislocation Plasticity Cylindrical Indenter Geometrically Necessary Dislocation
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ijsolstr.2010.07.012
WOS Subject ExtendedMechanics
Indexed BySCI
WOS KeywordSTRAIN GRADIENT PLASTICITY ; DETERMINING MECHANICAL-PROPERTIES ; DEPTH-SENSING INDENTATION ; THIN-FILMS ; WEDGE INDENTATION ; SPHERICAL INDENTERS ; SUBMICRON INDENTATION ; LATTICE RESISTANCE ; DEPENDENT HARDNESS ; MICRO-INDENTATION
Language英语
Quartile3区
TOP
WOS SubjectMechanics
WOS IDWOS:000282919900010
Funding OrganizationNSFC(10672064)
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5571
Collection山地灾害与地表过程重点实验室
Affiliation1.Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Peoples R China
2.Hubei Key Lab Engn Struct Anal & Safety Assessmen, Wuhan 430074, Peoples R China
3.CAS, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Ouyang, Chaojun,Li, Zhenhuan,Huang, Minsheng,et al. Cylindrical nano-indentation on metal film/elastic substrate system with discrete dislocation plasticity analysis: A simple model for nano-indentation size effect[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2010,47(22-23):3103-3114.
APA Ouyang, Chaojun,Li, Zhenhuan,Huang, Minsheng,&Fan, Haidong.(2010).Cylindrical nano-indentation on metal film/elastic substrate system with discrete dislocation plasticity analysis: A simple model for nano-indentation size effect.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,47(22-23),3103-3114.
MLA Ouyang, Chaojun,et al."Cylindrical nano-indentation on metal film/elastic substrate system with discrete dislocation plasticity analysis: A simple model for nano-indentation size effect".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 47.22-23(2010):3103-3114.
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