Size-dependent role of surfaces in the deformation of platinum nanoparticles

S Azadehranjbar, R Ding, IM Padilla Espinosa… - ACS …, 2023 - ACS Publications
The mechanical behavior of nanostructures is known to transition from a Hall-Petch-like
“smaller-is-stronger” trend, explained by dislocation starvation, to an inverse Hall-Petch …

Discontinuous yielding of pristine micro-crystals

OU Salman, R Baggio… - Comptes …, 2021 - comptes-rendus.academie-sciences …
We study the mechanical response of a dislocation-free 2D crystal under homogenous
shear using a new mesoscopic approach to crystal plasticity, a Landau-type theory …

Unconventional dislocation starvation behavior of medium-entropy alloy single crystal pillars containing pre-existing dislocations

L Wang, B Liu, J Zhou, Y Cao, F Zhang… - Journal of Materials …, 2023 - Elsevier
The excellent dislocation storage ability of bulk multi-principal element alloys (MPEAs) has
been widely reported. To date, however, the underlying mechanisms of dislocation escape …