Under uniaxial compressive loading, the designed Mg-based BMG demonstrates a remarkable macroscopic plastic strain of 2.5% and no work hardening behavior for the sample of 3 mm in diameter at room temperature.
Under uniaxial compressive loading, the designed Zr-based BMG demonstrates the continuous "work hardening" and remarkable macroscopic plastic strain at room temperature.
The plastic work is maximized while the accumulation of damage is managed through the use of macroscopic fracture constraints.
The results are not very sensitive to macroscopic plastic anisotropy.
Thereby a link is created between the microstructural evolution and the macroscopic plastic behaviour.
For λ<80 nm, the films are brittle at room temperature: they break without macroscopic plastic flow.
In plastic yielding, the analyses are performed assuming an elastic perfectly plastic lattice, and a micromechanical model based on homogenization scheme is applied to a representative unit cell to determine the macroscopic plastic yield surfaces in stress space.
During loading the microstresses increase in the macroscopic elastic regime but start to decrease slightly with increasing load in the macroscopic plastic regime.
Glass or plastic work best.
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