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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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Grimes, Roger
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Topics
Publications (4/4 displayed)
- 2017In-situ heated stage scanning electron microscope analysis and characterisation of recrystallization behaviour of a 7000 series alloy with nickel additionscitations
- 2010The development of superplastic magnesium alloy sheetcitations
- 2010Characterisation of ConformTM and conventionally extruded Al-4Mg-1Zr. Effect of extrusion route on superplasticitycitations
- 2010Development of microstructure and properties during the multiple extrusion and consolidation of Al-4Mg-1Zrcitations
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article
Development of microstructure and properties during the multiple extrusion and consolidation of Al-4Mg-1Zr
Abstract
Multiple extrusion of Al–4Mg–1Zr (wt.%) is presented as a severe plastic deformation technique to develop an ultra-fine grained material, using rapidly solidified needles as a feedstock. After each extrusion pass the microstructure is refined, the primary Al3Zr precipitates are broken down and <50-nm-scale cubic Al3Zr are precipitated from solution. Recovery dominates the initial passes with recrystallisation becoming dominant during later passes, but the grains remain at the sub-View the MathML sourcem scale. Interestingly, the yield stress and the ultimate strength increased significantly after the first pass, and then decreased – any strength increment gained from the grain refinement was offset by coarsening of the metastable nano-scale Al3Zr dispersoids.