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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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Sivaswamy, Giribaskar
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Effect of heat treatments on microstructure and mechanical properties of low-cost Ti-6Al-4V alloy produced by thermo-mechanical powder consolidation routecitations
- 2023Miniaturised experimental simulation of open-die forgingcitations
- 2022An innovative constitutive material model for predicting high temperature flow behaviour of inconel 625 alloycitations
- 2022An analysis of the forgeability of Ti-10V-2Fe-3Al β titanium alloy using a combined Estrin Mecking and Avrami material constitutive modelcitations
- 2021A novel cyclic thermal treatment for enhanced globularisation kinetics in Ti-6Al-4V alloycitations
- 2021Effect of texture and mechanical anisotropy on flow behaviour in Ti-6Al-4V alloy under superplastic forming conditionscitations
- 2021A new route for developing ultrafine-grained Al alloy strips using repetitive bending under tensioncitations
- 2020Formability of AA-7075 sheets subjected to repetitive bending under tension
- 2020Mechanical response and microstructure evolution of commercially pure titanium subjected to repetitive bending under tensioncitations
- 2018Design and validation of a fixture for positive incremental sheet formingcitations
- 2018Effect of deformation-induced adiabatic heating on microstructure evolution during open-die screw press forging of Ti-6Al-4V.
- 2017Effect of incremental equal channel angular pressing (I-ECAP) on the microstructural characteristics and mechanical behaviour of commercially pure titaniumcitations
- 2017Microstructure and mechanical properties of Al-1050 during incremental ECAPcitations
- 2014Complex Incremental Sheet Forming Using Back Die Support on Aluminium 2024, 5083 and 7075 alloyscitations
- 2014Improvement in ductility in commercially pure titanium alloys by stress relaxation at room temperaturecitations
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document
Effect of deformation-induced adiabatic heating on microstructure evolution during open-die screw press forging of Ti-6Al-4V.
Abstract
Microstructure evolution was investigated in a Ti-6Al-4V alloy having a coarse lath structure within large primary β grains, during hot forging using a 2100t screw press. A double truncated cone (DTC) sample, with 120 mm maximum diameter and XX height, was hot forged at 970°C (i.e. below β transus) to 60% of its height using the full capacity of the press (i.e. over 80% of the available energy), followed by air cooling. A finite element (FE) model of the forging process was also developed. A wide range of strains (i.e. 0.3 to 2.5) was generated in the mid-height of the DTC’s cross-section area . The adiabatic heating generated by the high deformation rate (i.e. up to 47s-1) caused a temperature rise by as much as 60°C which is enough to go beyond the β transus. Microstructural investigations of the final forgedmaterial show the presence of primary α and secondary α/ β phases. Primary α was uniformly distributed throughout the specimen’s cross-section disregarding the strain rate level during forging, implying XXX. Local disorientation due to forging induce deformation is observed within primary α grains. This implies thatthe deformation-induced adiabatic heating level was not high enough to increase the temperature significantly to trigger α-β phase transformation. This is in a good agreement with the results of FE model, as the predicted temperature rise induced by adiabatic heating was also not sufficient to keep the material above β-transus long enough to cause phase transformation.