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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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Kwame, James
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2021Effect of machining induced microstructure changes on the edge formability of titanium alloys at room temperature
- 2021Influence of longitudinal scratch defects on the bendability of titanium alloycitations
- 2020Influence of sheet conditions on in-plane strain evolution via ex-situ tensile deformation of Ti-3Al-2.5V at room temperaturecitations
- 2020Examining failure behaviour of commercially pure titanium during tensile deformation and hole expansion testcitations
- 2020Impact of machining induced surface defects on the edge formability of commercially pure titanium sheet at room temperaturecitations
- 2019Superplasticity of Ti-6Al-4V Titanium Alloy: Microstructure Evolution and Constitutive Modellingcitations
- 2019Superplastic deformation behavior of ultra-fine-grained Ti-1V-4Al-3Mo alloycitations
- 2019Experimental, modelling and simulation of an approach for optimizing the superplastic forming of Ti-6%Al-4%V titanium alloycitations
- 2019Effect of edge conditions on the formability of commercially pure titanium sheet (Grade 2) at room temperature
- 2017Superplastic deformation behaviour and microstructure evolution of near-α Ti-Al-Mn alloycitations
- 2017Modelling of the superplastic deformation of the near-a titanium alloy (Ti-2.5AL-1.8MN) using arrhenius-type constitutive model and artificial neural networkcitations
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article
Superplastic deformation behaviour and microstructure evolution of near-α Ti-Al-Mn alloy
Abstract
Superplastic deformation behaviour of conventional sheets of a near-α titanium alloy (Ti-2.5Al-1.8Mn) was studied by a step-by-step decrease of the strain rate and constant strain rate tests in a temperature range of 790–915 °C. The research found that superplastic deformation is possible in a temperature range of 815–890 °С and a constant strain rate range of 2 × 10−4 to 1 × 10−3 s−1 with elongation above 300% and m-index above 0.4. Also, the research identified the optimum superplastic temperature range of 815–850 °C and constant strain rate of 4 × 10−4 s−1 which provide a maximum elongation of 600–650%. Strain hardening is accelerated by dynamic grain growth at high temperatures of 865 and 890 °С. High dislocation activity is observed at superplastic flow in α-phase. Constitutive modelling of superplastic deformation behaviour is performed, and possible deformation mechanisms are discussed. It is suggested that grain boundary sliding between the α-grains is accommodated by a dislocation slip/creep mechanism.