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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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Kumar, Manoj
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024An experimental study on material removal rate and surface roughness of Cu-Al-Mn ternary shape memory alloys using CNC end millingcitations
- 2024A review on machinability and optimization of machining parameters of metal matrix compositescitations
- 2023Optimization of Pt nanoparticles loading in ZnO for highly selective and stable hydrogen gas sensor at reduced working temperaturecitations
- 2023Investigation on structural, magnetic and optical properties of Sm–Co Co-substituted BiFeO<sub>3</sub> samplescitations
- 2019Acute and Sub-acute Toxicity of Ganoderma applanatum (Pres.) Pat. Extract Mediated Silver Nanoparticles on Ratcitations
- 2017Quantitative prediction of the mechanical properties of precipitation hardened alloys with a special application to Al-Mg-Si
- 2015Optical and Structural Study of Polyaniline/Polystyrene Composite Filmscitations
- 2015Structural and Morphological Study of PS‐ZnO Nanocomposite Membranecitations
- 2015Structural and Morphological Study of PS‐TiO<sub>2</sub> Nanocomposite Membranescitations
- 2013Precipitation kinetics in warm forming of AW-7020 alloycitations
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article
Precipitation kinetics in warm forming of AW-7020 alloy
Abstract
The warm formability of the precipitation hardening AW-7020 (AlZn 4.5Mg1) alloy is investigated by testing extruded tubes. The precipitation kinetics of different conditions before and after warm deformation is studied by differential scanning calorimetry and transmission electron microcopy. The precipitation conditions are correlated with the results of hardness tests at room temperature and of tensile tests at temperatures between 200 and 350 °C at different strain rates. The yield strength decreases with increasing test temperature approaching that of samples in the annealed condition, while the strain at fracture increases. The overall influence of the strain rate on ductility is dominated by the corresponding time required for deformation. The formability of the starting condition T1 as well as the corresponding strain hardening exponent is particularly promising for high strain rates at 250 °C, where the metastable precipitates of the T1 condition are dissolved. The short exposure of about 30 s at 250 °C re-establishes the potential for precipitation strengthening by natural ageing after the warm deformation and a following paint baking heat treatment maintains the hardness level