|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIV
||The Statistics of Thermally Activated Structural Excitations in a Model Amorphous Solid
||Peter M Derlet, Robert Maass
|On-Site Speaker (Planned)
The present work uses atomistic simulation to investigate localized structural excitations in model amorphous systems that do not involve a driven material instability. Potential energy landscape exploration methods reveal extended chain like structural excitations, the energy of which is controlled predominantly by the elasticity of the surrounding amorphous matrix. This is complemented by very long molecular dynamics simulation runs spanning four orders of magnitude in temperature ramping time-scales. These dynamical simulations demonstrate significant local structural excitations as a function of increasing temperature which are compatible with those found by the static exploration methods, the kinetics of which can be quantitatively understood in terms of a power-law distribution of barrier energies.
||Planned: Supplemental Proceedings volume