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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
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thesis
Modélisation du comportement cyclique et de la durée de vie d'aciers à outils martensitiques
Abstract
This work is a contribution to the description of the behavior and the assessment of the fatigue life of hot work tool steels.For that purpose, a methodology was implemented involving two complementary parts that are the investigation of behaviorand lifetime models adapted to tempered martensitic steels. The cyclic behavior of X38CrMoV5 (47HCR) and 55NiCrMoV7 (42HCR) steels was studied under various load and temperature conditions. The influence of the strain rate and strain amplitude, of the dwell times within cycles as well as ratcheting or plastic accommodation effects for stress controlled tests, were taken into account in the modeling. Two models (ONERA, 2M1C) formulated in the framework of the irreversible processes of thermodynamics were considered. After their presentation, they were identified successfully by complexity level growing, according to the kind of loads taken into account. Compared with ONERA model, 2M1C model allows a better description both of strain controlled and stress controlled stress tests. Moreover, the two different mechanisms included in the model were related to the microstructural evolutions (dislocations and carbides) identified in low cycle fatigue. Two validations were performed providing interesting results: the first one, in an isothermal case, performed on different notched specimens under displacement controlled tests, the second one, in a non-isothermal case, related to thermal fatigue tests carried out in a co-operative project with the KARLSTAD university (Sweden). Fatigue life investigation of X38CrMoV5 steel was addressed in a second part. In order to cover the loading conditions of the hot forming processes, LCF tests were carried out to complete an existing database. The initiation and propagation mechanisms induced by fatigue relaxation test at the temperature of 560°C were investigaded. A non isothermal continuum damage model (ONERA) was identified. Analysis of experimental results do not reveal time dependant damage mechanisms, so only a fatigue damage component was activated in the model. The last part of this work relates to the lifetime model validation. The predictions provided by the model were compared with the number of cycles to failure resulting from LCF and TMF tests obtained in a previous work.