We discuss a microstructure evolution framework which couples atomic-level information about extended-defect interactions into a mesoscopic model; the latter, in turn, describes the dy-namic evolution of a statistical population of grain boundaries and dislocations. Atomistic simulations are carried out by means of molecular dynamics simulations on both isolated and interacting dislocations, grain boundaries, triple junctions, microcracks; the reference material for such studies is, at present, Silicon with the Stillinger-Weber potential. The mesoscale model describes the motion of discrete triple junctions (and, consequently, of the continuous network of adjoining grain boundaries) embedded in a continuous medium containing a homogeneous, evolving distribution of dislocations.
|Pages (from-to)||AA7.6.1 - AA7.6.6|
|Journal||Materials Research Society Symposium - Proceedings|
|Publication status||Published - 2001|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cleri, F., D'Agostino, G., Satta, A., & Colombo, L. (2001). Coupled atomistic-mesoscopic model of polycrystalline plasticity. Materials Research Society Symposium - Proceedings, 677, AA7.6.1 - AA7.6.6.