| People | Locations | Statistics |
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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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Bednarczyk, Wiktor
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Enhanced mechanical properties and microstructural stability of ultrafine-grained biodegradable Zn–Li–Mn–Mg–Cu alloys produced by rapid solidification and high-pressure torsioncitations
- 2023Determination of critical resolved shear stresses associated with <a> slips in pure Zn and Zn-Ag alloys via micro-pillar compressioncitations
- 2023Determination of critical resolved shear stresses associated with slips in pure Zn and Zn-Ag alloys via micro-pillar compressioncitations
- 2023Investigation of slip systems activity and grain boundary sliding in fine-grained superplastic zinc alloycitations
- 2022Long-term in vitro corrosion behavior of Zn-3Ag and Zn-3Ag-0.5Mg alloys considered for biodegradable implant applicationscitations
- 2021Abnormal grain growth in a Zn-0.8Ag alloy after processing by high-pressure torsioncitations
- 2020A novel high-strength Zn-3Ag-0.5Mg alloy processed by hot extrusion, cold rolling or high-pressure torsioncitations
- 2020Microstructure and mechanical properties of a Zn-0.5Cu alloy processed by high-pressure torsioncitations
- 2020A novel high-strength Zn-3Ag-0.5Mg alloy processed by hot extrusion, cold rolling, or high-pressure torsioncitations
- 2019Design of novel Zn-Ag-Zr alloy with enhanced strength as a potential biodegradable implant materialcitations
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article
Abnormal grain growth in a Zn-0.8Ag alloy after processing by high-pressure torsion
Abstract
Abnormal grain growth (AGG) in a Zn-0.8Ag (wt%) alloy, produced through the application of high-pressure torsion (HPT), was systematically investigated using scanning electron microscopy (SEM), electron backscattered diffraction (EBSD), high-resolution transmission electron microscopy (HR-TEM) and microhardness testing. The HPT-deformed alloy exhibits AGG at room temperature without any additional heat treatment. Analysis by EBSD revealed oriented grain nucleation in a {112¯0}〈0001〉 direction from the initial (0001) fibre texture which agrees with the maximum energy release model. New grains were oriented according to the minimal Young's modulus direction (c-axis), parallel to the shearing direction. The strain-induced dissolution of nanocrystalline Zn 3 Ag precipitates was identified as the main driving force for AGG in this alloy. The strains necessary for the initiation and termination of AGG were determined as ~4.0 and ~5.0, respectively. The increase in solid-solution strengthening caused an increase in hardness from ~47 HK in the fine-grained centre to ~84 HK in the coarse-grained region. A Hall-Petch investigation revealed grain refinement softening below a grain size of 23 µm. These results provide the first comprehensive description of AGG in metallic materials processed by a severe plastic deformation method at room temperature.