| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Alava, Mikko J.
National Centre for Nuclear Research
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Viscoelastic phenomena in methylcellulose aqueous systems : Application of fractional calculuscitations
- 2024Atomistic-level analysis of nanoindentation-induced plasticity in arc-melted NiFeCrCo alloys: The role of stacking faultscitations
- 2024Viscoelastic phenomena in methylcellulose aqueous systems:Application of fractional calculuscitations
- 2024Accelerated design of solid bio-based foams for plastics substitutescitations
- 2023Atomistic insights into nanoindentation-induced deformation of α-Al2O3 single crystalscitations
- 2023Striation lines in intermittent fatigue crack growth in an Al alloycitations
- 2022Hierarchical Slice Patterns Inhibit Crack Propagation in Brittle Sheetscitations
- 2022Shear banding instability in multicomponent metallic glasses: Interplay of composition and short-range ordercitations
- 2021Fatigue crack growth in an aluminum alloy: Avalanches and coarse graining to growth lawscitations
- 2020Propagating bands of plastic deformation in a metal alloy as critical avalanchescitations
- 2020Crossover from mean-field compression to collective phenomena in low-density foam-formed fiber materialcitations
- 2018Effects of precipitates and dislocation loops on the yield stress of irradiated ironcitations
- 2017Start-up inertia as an origin for heterogeneous flowcitations
- 2016Predicting sample lifetimes in creep fracture of heterogeneous materialscitations
- 2016Glassy features of crystal plasticitycitations
- 2013The influence of shear on the dewatering of high consistency nanofibrillated cellulose furnishescitations
- 2010Fracture roughness in three-dimensional beam lattice systemscitations
- 2009Optimization and Plasticity in Disordered Mediacitations
- 2008Fracture size effects from disordered lattice modelscitations
Places of action
| Organizations | Location | People |
|---|
article
Propagating bands of plastic deformation in a metal alloy as critical avalanches
Abstract
| openaire: EC/H2020/857470/EU//NOMATEN ; The plastic deformation of metal alloys localizes in the Portevin-Le Chatelier effect in bands of different types, including propagating, or type "A" bands, usually characterized by their width and a typical propagation velocity. This plastic instability arises from collective dynamics of dislocations interacting with mobile solute atoms, but the resulting sensitivity to the strain rate lacks fundamental understanding. Here, we show, by using high-resolution imaging in tensile deformation experiments of an aluminum alloy, that the band velocities exhibit large fluctuations. Each band produces a velocity signal reminiscent of crackling noise bursts observed in numerous driven avalanching systems from propagating cracks in fracture to the Barkhausen effect in ferromagnets. The statistical features of these velocity bursts including their average shapes and size distributions obey predictions of a simple mean-field model of critical avalanche dynamics. Our results thus reveal a previously unknown paradigm of criticality in the localization of deformation. ; Peer reviewed