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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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Stockinger, Martin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Effect of intercritical annealing on the microstructure and mechanical properties of a PH 13-8 Mo maraging steelcitations
- 2024Multiscale in-situ observations of the micro- and nanostructure of a PH 13-8 Mo maraging steel during austenitizationcitations
- 2023In Situ Observations of the Microstructural Evolution during Heat Treatment of a PH 13-8 Mo Maraging Steelcitations
- 2023Ballistic tests on hot-rolled Ti-6Al-4V platescitations
- 2022Influence of delta ferrite on the impact toughness of a PH 13-8 Mo maraging steelcitations
- 2021Theoretical and experimental investigations of mechanical vibrations of hot hammer forgingcitations
- 2021Dry friction under pressure variation of PACVD TiN surfaces on selected automotive sheet metals for the application in unlubricated metal formingcitations
- 2016Additive Manufacturing via Cold Metal Transfer
- 2014Studies on ductile damage and flow instabilities during hot deformation of a multiphase γ-TiAl alloycitations
- 2014Modelling of the ductile damage behaviour of a beta solidifying gamma titanium aluminide alloy during hot-workingcitations
- 2014Thermomechanical behavior of different Ni-base superalloys during cyclic loading at elevated temperaturescitations
- 2014Modeling of two-phase grain structure in the titanium alloy TI-6AL-4V using cellular automatacitations
- 2013Modeling of dual-phase grain structure in Ti-6Al-4V during isothermal and non-isothermal heat treatment using cellular automata
- 2012Determination of the mechanism of restoration in subtransus hot deformation of Ti-6Al-4Vcitations
- 2012Influence of temperature and strain rate on dynamic softening processes in AllvacR 718PlusTMcitations
- 2011Assessment of dynamic softening mechanisms in Allvac® 718Plus™ by EBSD analysiscitations
- 2009Introduction to an approach based on the (α+β) microstructure of elements of alloy Ti-6Al-4Vcitations
- 2008δ-phase characterization of superalloy Allvac 718 Plus™
- 2007Fatigue analysis of forged aerospace components based on micro structural parameters
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document
Modelling of the ductile damage behaviour of a beta solidifying gamma titanium aluminide alloy during hot-working
Abstract
<p>The hot workability of intermetallic titanium aluminide alloys can be limited by ductile failure. Titanium aluminides undergo microstructural changes during hot deformation processes, including flow instabilities such as shear bands, flow localization, void formation and growth. In this work, the ductile damage behaviour of a gamma titanium aluminide alloy with a nominal composition of Ti-43.5Al-4Nb-1Mo-0.1B (in at. %) termed TNM, was studied by means of damage modelling implemented in finite element method simulations. The flow localization or α parameter was calculated based on flow softening due to flow instabilities in the material. Predictions by the α instability criteria were compared with traditional models such as Cockcroft & Latham, normalized Cockcroft & Latham, Brozzo and Ayada. Predictions of these instability and damage parameters were validated by hot compression experiments carried out on a Gleeble®3800 simulator. Hot deformation experiments of the TNM alloy were conducted in a wide range of temperatures and strain rates up to a strain of 0.9. Metallography was carried out on deformed specimens using light optical microscopy and scanning electron microscopy to determine damage and flow localization. Deformation at high strain rates was characterized by instabilities due to adiabatic flow such as shear bands and cracks.</p>