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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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Velay, Vincent Lionel Sébastien
IMT Mines Albi
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2021Engine Oil- Crankshaft Interaction Fem Modelling of an Air-Cooled Diesel Engine under Dynamic Severe Functioning Conditions
- 2021Initial microstructure influence on Ti-Al-Mo-V alloy’s superplastic deformation behavior and deformation mechanismscitations
- 2020Oxygen/nitrogen-assisted degradation of the mechanical behavior of titanium alloys exposed at elevated temperaturecitations
- 2020Role of grain size and crystallographic texture on tensile behavior induced by sliding mechanism in Ti-6Al-4V alloycitations
- 2020Influence of strain rate and temperature on the deformation mechanisms of a fine-grained Ti-6Al-4V alloycitations
- 2020Experimental study of the superplastic and hot deformation mechanisms of a Ti-6Al-2Sn-4Zr-2Mo Titanium Alloycitations
- 2019Enhancement of superplasticity of the Ti-6Al-4V alloy via ultrafine grained heterogeneous microstructural control and metastable microstructural control
- 2019An optimization of the local hall-petch relationship using slip trace analysis technique and scale transition rules: application in equiaxed ti-6al-4v titanium alloy
- 2018Superplastic Property of the Ti-6Al-4V Alloy with Ultrafine-Grained Heterogeneous Microstructurecitations
- 2018Characterization and modeling of forged Ti-6Al-4V Titanium alloy with microstructural considerations during quenching processcitations
- 2017Mesoscale modeling of dynamic recrystallization behavior, grain size evolution, dislocation density, processing map characteristic, and room temperature strength of Ti-6Al-4V alloy forged in the (α+β) regioncitations
- 2016Multi-scale surface modeling of the nonlinear mechanical behaviour of AISI H11 hot work tool steel
- 2016Behavior modelling and microstructural evolutions of Ti-6Al-4V alloy under hot forming conditionscitations
- 2016Multi-scale Modelling of the Surface Behaviour of AISI H11 Tool Steels
- 2016Superplastic forming optimization technique based on average strain rate controlling – Numerical simulation and experimental validation
- 2015Superplasticity of the Ultrafine-Grained Ti-6Al-4V Alloy with a Metastable α-Single Phase Microstructurecitations
- 2015Thermomechanical behaviour and microstructural evolution of high temperature forged Ti-6Al-4V during heat treatment quenching
- 2014Investigation of the mechanical behaviour of Ti-6Al-4V alloy under hot forming conditions: Experiment and modellingcitations
- 2014A numerical investigation on the heterogeneous and anisotropic mechanical behaviour of AISI H11 steel using various stress-strain formulations : a multi-scale approach
- 2012Experimental Study of the Deformation Mechanisms in Textured Alpha-titanium Alloy Sheets
- 2011Processes and equipment for superplastic forming of metalscitations
- 2010High Temperature Fatigue of SPF Die Ni-Cr-Fe Heat Resistant Nickel-Chromium Cast Steelscitations
- 2010Effect of the LCF loading cycle characteristics on the fatigue life of inconel 718 at high temperature
- 2009A microstructural and low-cycle fatigue investigation of weld-repaired heat-resistant cast steelscitations
- 2008Thermal behaviour modelling of superplastic forming toolscitations
- 2007Behaviour model identification based on inverse modeling and using Optical Full Field Measurements (OFFM): application on rubber and steel
- 2007Behaviour parameters identification of polymer membranes during bubble inflation processcitations
- 2003Modélisation du comportement cyclique et de la durée de vie d'aciers à outils martensitiques
- 2002Cyclic behaviour modelling of martensitic hot work tool steels
Places of action
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conferencepaper
Thermomechanical behaviour and microstructural evolution of high temperature forged Ti-6Al-4V during heat treatment quenching
Abstract
Ti-6Al-4V is a titanium alloy widely used for aircraft components (Banerjee & Williams 2013). Its manufacturing processes comprise thermo- mechanical treatments including cooling steps during which residual stresses can be generated and can thus make more difficult the machining steps (Gunnberg et al. 2006). This contribution deals with a global approach undertaken to get better insight into the thermomechanical behaviour and the microstructural evolution during heat treatments, and particularly during the cooling operations from the (α + β) phase field, of the high temperature forged Ti-6Al-4V titanium alloys. A new experimental facility using conventional hydraulic testing machine and induction heating was developped to investigate differents temperature-time histories representatives of the conditions undergone in parts during quenching. Specific thermo-mechanical tests of the Ti-6Al-4V titanium alloy were then carried out as a function of the temperature, the strain rate and the cooling rate. Tensile mechanical tests performed on Ti-6Al-4V alloy exibits a predominant viscosity at high temperature whereas a significant hardening mechanism occurs at low temperature. Tensile tests with strain dwell time allow to determine the effect of both viscous and non viscous stress levels whatever the temperature and the cooling rate considered. Moreover, as the mechanical properties, at a specific temperature, can be strongly related to the microstructure (phase transformation) (Roy & Suwas 2013), post-mortem optical and scanning electron microscope observations was carried out to study the metallurgical evolution (fraction, size and morphologies of the α and β phases). Hence, an image analysis protocol was developed to study the surface fraction of phases and grain sizes. It shows that they mainly evolve in a particular domain of temperature (950 to 700 °C) and for a specific range of cooling rate (5 to 60 °C/min). The grains belonging to the high temperature β phase transform progressively into lamellar grains (β + αII) where the surface fraction of β evolves linearly with the cooling rate. Furthermore, a high cooling rate may favors the nucleation of αII lamellae which can lead to a large population of thin lamellae. It is shown that cooling rate effect induce a material hardening due to a wide number of interfaces. References Banerjee, D. & Williams, J.C. (2013): Perspectives on Titanium Science and Technology. - In: Acta Materialia, 61: 844–879. Gunnberg, F., Escursell, M. & Jacobson, M. (2006): The influence of cutting parameters on residual stresses and surface topography during hard turning of 18MnCr5 case carburised steel. - In: Journal of Materials Processing Technology, 174: 82–90. Roy, S. & Suwas, S. (2013): The influence of temperature and strain rate on the deformation response and microstructural evolution during hot compression of a titanium alloy Ti–6Al–4V–0.1B. - In: Journal of Alloys and Compounds, 548: 110–125.