Cylindrical nano-indentation on metal film/elastic substrate system with discrete dislocation plasticity analysis: A simple model for nano-indentation size effect

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	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, Zhenhuan 1,2; Huang, Minsheng 1,2; Fan, Haidong 1,2
刊名	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2010-11-01
卷号	47 期号:22-23 页码:3103-3114
关键词	Film/substrate system Indentation size effect Discrete dislocation plasticity Cylindrical indenter Geometrically necessary dislocation
ISSN号	0020-7683
通讯作者	Li, ZH
英文摘要	The 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.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Mechanics
研究领域[WOS]	Mechanics
关键词[WOS]	STRAIN GRADIENT PLASTICITY ; DETERMINING MECHANICAL-PROPERTIES ; DEPTH-SENSING INDENTATION ; THIN-FILMS ; WEDGE INDENTATION ; SPHERICAL INDENTERS ; SUBMICRON INDENTATION ; LATTICE RESISTANCE ; DEPENDENT HARDNESS ; MICRO-INDENTATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000282919900010
公开日期	2013-07-05
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5571]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	1.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
推荐引用方式 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.