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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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Divinski, Sergiy
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2025Hierarchy of defects in near-Σ5 tilt grain boundaries in copper studied by length-scale bridging electron microscopy
- 2024Impact of sulfur addition on the structure and dynamics of Ni–Nb alloy meltscitations
- 2024Impact of sulfur addition on the structure and dynamics of Ni–Nb alloy meltscitations
- 2024Anomalies in the short-range local environment and atomic diffusion in single crystalline equiatomic CrMnFeCoNi high-entropy alloycitations
- 2024Anomalies in the short-range local environment and atomic diffusion in single crystalline equiatomic CrMnFeCoNi high-entropy alloycitations
- 2024Severe plastic deformation for producing superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary review
- 2024Severe plastic deformation for producing Superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary reviewcitations
- 2023Atomic diffusion in bcc Fe–Mn alloys: Theoretical analysis and experimental measurements across the Curie temperaturecitations
- 2023Evidence for Glass–glass Interfaces in a Columnar Cu–Zr Nanoglasscitations
- 2023Tellurium self-diffusion in amorphous Ge2Sb2Te5 phase change materialscitations
- 2023Interstitials in compositionally complex alloyscitations
- 2022Recent advances in understanding diffusion in muti-principal element systems
- 2022Recent Advances in Understanding Diffusion in Multiprincipal Element Systemscitations
- 2020Ultrafast Atomic Diffusion Paths in Fine-Grained Nickel Obtained by Spark Plasma Sinteringcitations
- 2017Computationally-driven engineering of sublattice ordering in a hexagonal AlHfScTiZr high entropy alloycitations
- 2017Defects, Driving Forces and Definitions of Diffusion Coefficients in Solidscitations
- 2012Grain boundaries in ultrafine grained materials processed by severe plastic deformation and related phenomenacitations
- 2011MICROSTRUCTURE EVOLUTION DURING SEVERE PLASTIC DEFORMATIONcitations
- 2011Annealing behaviour of nanocrystalline NiTi (50 at% Ni) alloy produced by high-pressure torsioncitations
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article
Grain boundaries in ultrafine grained materials processed by severe plastic deformation and related phenomena
Abstract
International audience ; Grain boundaries in ultrafine grained (UFG) materials processed by severe plastic deformation (SPD) are often called "non-equilibrium" grain boundaries. Such boundaries are characterized by excess grain boundary energy, presence of long range elastic stresses and enhanced free volumes. These features and related phenomena (diffusion, segregation, etc.) have been the object of intense studies and the obtained results provide convincing evidence of the importance of a non-equilibrium state of high angle grain boundaries for UFG materials with unusual properties. The aims of the present paper are first to give a short overview of this research field and then to consider tangled, yet unclear issues and outline the ways of oncoming studies. A special emphasis is given on the specific structure of grain boundaries in ultrafine grained materials processed by SPD, on grain boundary segregation, on interfacial mixing linked to heterophase boundaries and on grain boundary diffusion. The connection between these unique features and the mechanical properties or the thermal stability of the ultrafine grained alloys is also discussed.