Abstract
In previous work it was shown that the power-spectrum of the energy
release in a twinned crystal under deformation, exhibits a transition
from a low-temperature power-law to a high temperature activated
dynamics. In this work we provide a statistical mechanics explanation to
this behavior based on the understanding that the origin of the
power-law behavior stems from a pattern of vertical twins that forms at
the onset of yield, and serves as pinning sites to the motion of the
(horizontal) twins. The transition to activated behavior is explained by
a master equation based on a ``trap model.''
| Original language | English |
|---|---|
| Title of host publication | American Physical Society, APS March Meeting 2013, March 18-22, 2013 |
| State | Published - 1 Mar 2013 |
| Externally published | Yes |