(New York : American Institute of Physics, 2011) Ren, J.L.; Chen, C.; Wang, G.; Mattern, N.; Eckert, J.
Under compression loading, bulk metallic glasses (BMGs) irreversibly deform
through shear banding manifested as a serrated flow behavior. By using a statistical
analysis together with a complementary dynamical analysis of the stress-time curves
during serrated flow, we characterize the distinct spatiotemporal dynamical regimes
and find that the plastic dynamic behavior of a Cu50Zr45Ti5 BMG changes from
chaotic to self-organized critical behavior with increasing strain rate. This plastic
dynamics transition with the strain rate is interpreted in the frame of the competence
between the neighboring elastic strain field forming and relaxation processes.
