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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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Chromiński, Witold
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Albumin suppresses oxidation of Ti-Nb alloy in the simulated inflammatory environment
- 2021Microstructure, Texture and Mechanical Properties of Mg-6Sn Alloy Processed by Differential Speed Rollingcitations
- 2019Investigation of different severe plastic deformation methods effect on Ti13Nb13Zr
- 2019Tribological behavior of a hydrostatically extruded ultra-fine grained Ti-13Nb-13Zr alloycitations
- 2019The importance of microstructural heterogeneities in the work hardening of ultrafine-grained aluminum, studied by in-situ TEM straining and mechanical testscitations
- 2018Enhanced strength and electrical conductivity of ultrafine-grained Al-Mg-Si alloy processed by hydrostatic extrusioncitations
- 2018Mechanisms of plastic deformation in ultrafine-grained aluminium – In-situ and ex-post studiescitations
- 2017Ultrafine-Grained Plates of Al-Mg-Si Alloy Obtained by Incremental Equal Channel Angular Pressing: Microstructure and Mechanical Propertiescitations
- 2017Microstructure and Texture Evolutions of Biomedical Ti-13Nb-13Zr Alloy Processed by Hydrostatic Extrusioncitations
- 2017Mechanical properties and corrosion resistance of ultrafine grained austenitic stainless steel processed by hydrostatic extrusioncitations
- 2017Accumulation and mechanism of the fatigue damage for a nickel based superalloy
- 2017Evaluation of mechanical properties and anisotropy of ultra-fine grained 1050 aluminum sheets produced by incremental ECAPcitations
- 2016Mechanical properties, structural and texture evolution of biocompatible Ti–45Nb alloy processed by severe plastic deformationcitations
- 2016Incremental ECAP as a method to produce ultrafine grained aluminium platescitations
- 2015Microstructure evolution in aluminium 6060 during Incremental ECAP
- 2015Efficient method of producing ultrafine grained non-ferrous metals
- 2015Grain refinement in technically pure aluminium plates using incremental ECAP processingcitations
- 2014Enhancement of mechanical properties of biocompatible Ti-45Nb alloy by hydrostatic extrusioncitations
- 2014Incremental ECAP as a novel tool for producing ultrafine grained aluminium platescitations
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article
Mechanisms of plastic deformation in ultrafine-grained aluminium – In-situ and ex-post studies
Abstract
The microstructure of a 1050 aluminium alloy produced by hydrostatic extrusion varies in terms of grainboundary characteristics and the dislocation substructure depending on the grain orientation. This leads to avariance of plastic deformation mechanisms under external load. In this paper, the microstructure of as-extrudedsamples was compared to extruded and deformed in a bulk compression test to follow the reaction of variousgrains to external strain. In-situ TEM straining experiments were performed to study the variance of mobiledislocation activities depending on the local dislocation substructure in as-extruded material to deduce theoperative deformation mechanism. These experiments accompanied with an estimation of strengthening mechanismsallowed to explain the role of different grains in the plastic deformation of ultrafine grained aluminiumtreated as a heterogenous complex system. It is demonstrated that well-developed ultrafine grains are responsiblefor providing strength since no intergranular dislocation intersections were reported but the motion ofgrain boundary dislocations or dislocation annihilation in boundaries. At the same time, relatively large grainswith well-developed dislocation substructures accommodate plastic strain by provoking a more complex reaction– unstable dislocation arrays collapse while more advanced structures evolve into new low angle boundaries.The results from in-situ experiments were also used to explain subgrain shape changes observed after bulkdeformation.