105 citations · 227 across the 5 of their papers we have counts for
5 papers
Plastic yielding and deformation bursts in the presence of disorder from coherent precipitates
Henri Salmenjoki, Arttu Lehtinen, Lasse Laurson +1
Alloying metals with other elements is often done to improve the material strength or hardness. A key microscopic mechanism is precipitation hardening, where precipitates impede di…
Excitation spectra in crystal plasticity
Markus Ovaska, Arttu Lehtinen, Mikko J. Alava +2
Plastically deforming crystals exhibit scale-free fluctuations that are similar to those observed in driven disordered elastic systems close to depinning, but the nature of the yie…
Glassy features of crystal plasticity
Arttu Lehtinen, Giulio Costantini, Mikko J. Alava +2
Crystal plasticity occurs by deformation bursts due to the avalanche-like motion of dislocations. Here we perform extensive numerical simulations of a three-dimensional dislocation…
Multi-scale modeling of dislocation-precipitate interactions in Fe: from molecular dynamics to discrete dislocations
Arttu Lehtinen, Fredric Granberg, Lasse Laurson +2
The stress-driven motion of dislocations in crystalline solids, and thus the ensuing plastic deformation process, is greatly influenced by the presence or absence of various point-…
Transient Shear Banding in Time-dependent Fluids
Xavier Illa, Antti Puisto, Arttu Lehtinen +2
We study the dynamics of shear-band formation and evolution using a simple rheological model. The description couples the local structure and viscosity to the applied shear stress.…