| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Richard, Fabrice
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Fracture toughness determination methods of WC-Co cemented carbide material at micro-scale from micro-bending method using nanoindentation
- 2023The effect of heat treatment on the mechanical behavior of an ASTM-F2063 nitinol stent intended for venous application
- 2022Simultaneous extraction of the elastic-plastic properties of a thin film and its substrate from an identifiability-based design of depth-sensing nanoindentation testing
- 2020RELATION BETWEEN HARDNESS OF (Ti, Al)N BASED MULTILAYERED COATINGS AND PERIODS OF THEIR STACKINGcitations
- 2020RELATION BETWEEN HARDNESS OF (Ti, Al)N BASED MULTILAYERED COATINGS AND PERIODS OF THEIR STACKINGcitations
- 2020Identifiability of single crystal plasticity parameters from residual topographies in Berkovich nanoindentation on FCC nickelcitations
- 2020RELATION BETWEEN HARDNESS OF MULTILAYERED (Ti, Al)N BASED COATINGS AND PERIODS OF THEIR STACKING
- 2020A new way to identify thin sheet behaviour : micro-in def
- 2020On the uniqueness of intrinsic viscoelastic properties of materials extracted from nanoindentation using FEMUcitations
- 2019Relation between hardness of multilayered (Ti,Al)N based coatings and periods of their stacking
- 2018Single crystal plasticity parameters identification from residual imprint topography after nano-indentation
- 2018A viscoelastoplastic stiffening model for plant fibre unidirectional reinforced composite behaviour under monotonic and cyclic tensile loading
- 2018Instrumented incremental sheet testing for material behavior extraction under very large strain : information richness of continuous force measurement
- 2018About Nonlinear Behavior of Unidirectional Plant Fibre Compositecitations
- 2017Numerical prediction of the forming limit diagrams for characterizing the thin sheet formability
- 2016Sensitivity of the residual topography to single crystal plasticity parameters in Berkovich nanoindentation on FCC nickel
- 2014Anisotropy and crystal plasticity analysis of a FCC nickel polycrystal by nanoindentation and numerical modeling
- 2014Microstructural and elasto-plastic material parameters identification by inverse finite elements method of Ti(1-x) AlxN (0 < x < 1 sputtered thin films from Berkovich nano-indentation experimentscitations
- 2013Influence of the initial grain size in single point incremental forming process for thin sheets metal and microparts: Experimental investigationscitations
- 2011Interprétation du module d'indentation dans le cas des matériaux anisotropes et/ou actifscitations
- 2006Effect of the residual stress on the determination through nanoindentation technique of the Young's modulus of W thin film deposit on Si02/Si substrate
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article
RELATION BETWEEN HARDNESS OF (Ti, Al)N BASED MULTILAYERED COATINGS AND PERIODS OF THEIR STACKING
Abstract
<jats:p>This study aims to model, by using a finite element method, the relationship between the hardness and the period Λ of metal/nitride multilayer coatings (Ti0.54Al0.46/Ti0.54Al0.46N)n in order to understand the increase of the hardness at the low periods [1] and then optimise the multilayer coating architecture to obtain the best mechanical properties. A 2D axisymmetric finite element model of the Berkovich nanoindentation test was developed. The coating was designed as a stacking of Ti0.54Al0.46 and Ti0.54Al0.46N nanolayers with, in the first hypothesis, equal thickness and perfect interface. The elastoplastic behaviours of the metal and nitride layers were identified by Berkovich nanoindentation experiments and inverse analysis on thick monolayer samples. The indentation curves (P-h) obtained by this model depend on the period Λ of the stacking. Simulated (P-h) curves were compared with experimental data on 2 μm thick films with different periods Λ ranging from 10 to 50 nm deposited by RF magnetron sputtering using reactive gas pulsing process (RGPP). The model forecasts are very consistent with the experience for the largest period but the model does not reproduce the hardness increase at the lowest periods. The Λ = 10 nm coating was analysed by electron energy loss spectroscopy (EELS) on a transmission electron microscope. Results show intermixing of the layers with the presence of nitrogen atoms in the metal layer over a few nanometers [1]. It was concluded that the metal/ceramic interface plays an important role at low periods. The addition in the model of a transition layer in the metal/nitride stacking, with an elastoplastic metal/ceramic medium behaviour, allows to reproduce the nanoindentation experimental curves. The thickness of this transition layer deduced from model updating method is in very good agreement with EELS observations.</jats:p>