Abstract
Preheated Bi (296–532 K) was ramp compressed with 15–35 ns rise times to a peak stress of to explore structural phase-transformation kinetics under dynamic loading conditions. At high strain rates, , deviation from equilibrium phase boundaries suggests that compression time scales are comparable to the new phase incubation period. The dependence of on is consistent with a thermally activated transformation.
- Received 29 February 2008
DOI:https://doi.org/10.1103/PhysRevLett.101.065701
©2008 American Physical Society