Journal ArticleDOI
Effects of the substrate on the determination of thin film mechanical properties by nanoindentation
Ranjana Saha,William D. Nix +1 more
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In this paper, the effects of the substrate on the determination of mechanical properties of thin films by nanoindentation were examined, and the properties of aluminum and tungsten films on the following substrates: aluminum, glass, silicon and sapphire.About:
This article is published in Acta Materialia.The article was published on 2002-01-08. It has received 1410 citations till now. The article focuses on the topics: Nanoindentation & Elastic modulus.read more
Citations
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Evaluation of mechanical properties of Zr–Cu–Al–Ni TFMG using nanoindentation
TL;DR: In this paper, the effects of thin-film metallic glasses (TFMG) with various thicknesses can be evaluated through nanoindentation experiments, and the free volume model (FVM) is employed to consider the pressure-dependent behavior such as shear band and softening of Zr-TFMG.
Journal ArticleDOI
Mechanics of fracture in nanometer-scale components
TL;DR: In this paper, a series of experimental studies on the mechanics of nano-component fracture focusing especially on the interfacial strength in the nano-components, which consist of dissimilar nano-layers.
Journal ArticleDOI
A Perspective of Pulsed Laser Deposition (PLD) in Surface Engineering: Alumina Coatings and Substrates
Adele Carradò,Hervé Pelletier,Felix Sima,Carmen Ristoscu,Agnès Fabre,Laurent Barrallier,Ion N. Mihailescu +6 more
TL;DR: In this article, two original studies of the alumina as porous substrate and PLD (pulsed laser deposition) thin films in view of its biomedical and tribological applications are presented.
Journal ArticleDOI
Spherical nano-indentation of a hard thin film/soft substrate layered system: I. Critical indentation depth
Yo-Han Yoo,Woong Lee,Hyunho Shin +2 more
TL;DR: In this paper, the effect of the radius of the spherical indenter on the critical nano-indentation depth to ensure reliable measurement of thin film properties was investigated numerically for a Si hard thin film/Al soft substrate layered system.
Journal ArticleDOI
Evaluation of thin film material properties using a deep nanoindentation and ANN
TL;DR: In this article , an experimental and ANN-based method for evaluating properties of thin film metallic glass (TFMG) was developed, where a deeper indentation depth was adopted to evaluate accurate film properties, albeit with significant substrate deformation.
References
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Journal ArticleDOI
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments
Warren C. Oliver,George M. Pharr +1 more
TL;DR: In this paper, the authors used a Berkovich indenter to determine hardness and elastic modulus from indentation load-displacement data, and showed that the curve of the curve is not linear, even in the initial stages of the unloading process.
Journal ArticleDOI
The relation between load and penetration in the axisymmetric Boussinesq problem for a punch of arbitrary profile
TL;DR: In this article, a solution of the axisymmetric Boussinesq problem is derived from which are deduced simple formulae for the depth of penetration of the tip of a punch of arbitrary profile and for the total load which must be applied to the punch to achieve this penetration.
Journal ArticleDOI
Indentation size effects in crystalline materials: A law for strain gradient plasticity
William D. Nix,Huajian Gao +1 more
TL;DR: In this article, the indentation size effect for crystalline materials can be accurately modeled using the concept of geometrically necessary dislocations, which leads to the following characteristic form for the depth dependence of the hardness: H H 0 1+ h ∗ h where H is the hardness for a given depth of indentation, h, H 0 is a characteristic length that depends on the shape of the indenter, the shear modulus and H 0.
Journal ArticleDOI
Mechanism-based strain gradient plasticity— I. Theory
TL;DR: In this paper, a mechanism-based theory of strain gradient plasticity is proposed based on a multiscale framework linking the microscale notion of statistically stored and geometrically necessary dislocations to the mesoscale notion of plastic strain and strain gradient.
Journal ArticleDOI
Influences of pileup on the measurement of mechanical properties by load and depth sensing indentation techniques
Alexei Bolshakov,George M. Pharr +1 more
TL;DR: In this article, the authors used finite element simulation of conical indentation of a wide variety of elastic-plastic materials to investigate the influences of pileup on the accuracy with which hardness and elastic modulus can be measured by load and depth-sensing indentation techniques.
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