What is indentation hardness?

被引：134

作者：

Cheng, YT ^{[1
]}

Cheng, CM

机构：

[1] Gen Motors Res & Dev Ctr, Mat & Proc Lab, Warren, MI 48090 USA

[2] Chinese Acad Sci, Inst Mech, Lab Non Linear Mech Continuous Media, Beijing 100080, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2000年 / 133卷

关键词：

hardness; nano-indentation; creep;

D O I：

10.1016/S0257-8972(00)00896-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Using dimensional analysis and finite element calculations, we derive simple scaling relationships for loading and unloading curve, contact depth, and hardness. The relationship between hardness and the basic mechanical properties of solids, such as Young's modulus, initial yield strength, and work-hardening exponent, is then obtained. The conditions for 'piling-up' and 'sinking-in' of surface profiles during indentation are determined. A method for estimating contact depth from initial unloading slope is examined. The work done during indentation is also studied. A relationship between the ratio of hardness to elastic modulus and the ratio of irreversible work to total work is discovered. This relationship offers a new method for obtaining hardness and elastic modulus. Finally, a scaling theory for indentation in power-law creep solids using self-similar indenters is developed. A connection between creep and 'indentation size effect' is established. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：417 / 424

页数：8

共 45 条

[1] Nanoindentation creep of single-crystal tungsten and gallium arsenide [J].

Asif, SAS ;

Pethica, JB .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1997, 76 (06) :1105-1118

[2]

ATKINS AG, 1966, J I MET, V94, P369

[3] FINITE-ELEMENT SIMULATION OF INDENTATION EXPERIMENTS [J].

BHATTACHARYA, AK ;

NIX, WD .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1988, 24 (09) :881-891

[4] Nanoindentation and picoindentation measurements using a capacitive transducer system in atomic force microscopy [J].

Bhushan, B ;

Kulkarni, AV ;

Bonin, W ;

Wyrobek, JT .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1996, 74 (05) :1117-1128

[5] Hardness of a surface containing uniformly spaced pyramidal asperities [J].

Bobji, MS ;

Biswas, SK .

TRIBOLOGY LETTERS, 1999, 7 (01) :51-56

[6] Influences of stress on the measurement of mechanical properties using nanoindentation .2. Finite element simulations [J].

Bolshakov, A ;

Oliver, WC ;

Pharr, GM .

JOURNAL OF MATERIALS RESEARCH, 1996, 11 (03) :760-768

[7] On the initial unloading slope in indentation of elastic-plastic solids by an indenter with an axisymmetric smooth profile [J].

Cheng, CM ;

Cheng, YT .

APPLIED PHYSICS LETTERS, 1997, 71 (18) :2623-2625

[8] Effects of 'sinking in' and 'piling up' on estimating the contact area under load in indentation [J].

Cheng, YT ;

Cheng, CM .

PHILOSOPHICAL MAGAZINE LETTERS, 1998, 78 (02) :115-120

[9] Scaling relationships in conical indentation of elastic perfectly plastic solids [J].

Cheng, YT ;

Cheng, CM .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1999, 36 (08) :1231-1243

[10] Relationships between hardness, elastic modulus, and the work of indentation [J].

Cheng, YT ;

Cheng, CM .

APPLIED PHYSICS LETTERS, 1998, 73 (05) :614-616

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