Plasticity of ductile metallic glasses: a self-organized critical state.
We report a close correlation between the dynamic behavior of serrated flow and the plasticity in metallic glasses (MGs) and show that the plastic deformation of ductile MGs can evolve into a self-organized critical state characterized by the power-law distribution of shear avalanches. A stick-slip model considering the interaction of multiple shear bands is presented to reveal complex scale-free intermittent shear-band motions in ductile MGs and quantitatively reproduce the experimental observations. Our studies have implications for understanding the precise plastic deformation mechanism of MGs.
Sun
B A
BA
Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Yu
H B
HB
Jiao
W
W
Bai
H Y
HY
Zhao
D Q
DQ
Wang
W H
WH