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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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Panigrahi, A.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2018Texture and microstructure of HPT-processed Fe-based shape memory alloyscitations
- 2017Microstructure and Texture Evolutions of Biomedical Ti-13Nb-13Zr Alloy Processed by Hydrostatic Extrusioncitations
- 2017Thermal stability and latent heat of Nb–rich martensitic Ti-Nb alloyscitations
- 2017Giant thermal expansion and α-precipitation pathways in Ti-Alloyscitations
- 2016Mechanical properties, structural and texture evolution of biocompatible Ti–45Nb alloy processed by severe plastic deformationcitations
- 2015Thermal stability of hpt-induced omega phase in biocompatible ti-16.1Nb alloys
- 2015Precipitation processes in nanostructured 7475 aluminium alloy
- 2015Phase transformations and mechanical properties of biocompatible Ti-16.1Nb processed by severe plastic deformationcitations
- 2014Enhancement of mechanical properties of biocompatible Ti-45Nb alloy by hydrostatic extrusioncitations
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article
Precipitation processes in nanostructured 7475 aluminium alloy
Abstract
<p>In ultrafine and/or nanograined materials, precipitation phenomena are significantly affected by the high surface area of grain boundaries. Therefore, this work tried to evaluate the influence of grain boundaries on precipitation processes in detail. Samples of 7475 aluminium alloy were solution annealed, water quenched and processed at RT by hydrostatic extrusion (HE) and high pressure torsion (HPT). While both processing procedures yield significant reductions in grain size there are differences in the resulting grain shape (fibre-like for HE, pancake-like for HPT) and in the grain boundary type. Extensive grain boundary precipitation occurs in both samples, albeit more pronounced and faster in HPT ones, which can be attributed to the different characters of grain boundaries involved. Inside the grains, precipitates are significantly smaller than in micrograined materials, which has been discussed in terms of HE/HPT induced vacancy concentrations in micro- and nanostructured samples.</p>