Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1499494 | Scripta Materialia | 2012 | 4 Pages |
Abstract
The mechanical behavior of single crystalline aluminum nano-pillars under uniaxial compression differs from bulk Al in that the former is characterized by a smoother transition from elasticity to plasticity. We propose an extension of the phenomenological model of dislocation starvation originally proposed in [Greer and Nix, Phys. Rev. B 73 (2006) 245410] additionally accounting for dislocation nucleation. The calibrated and validated continuum model successfully captures the intrinsic mechanisms leading to the transition from dislocation starvation to dislocation nucleation in fcc nano-pillars.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Antoine Jérusalem, Ana Fernández, Allison Kunz, Julia R. Greer,