Very high plastic strains exceeding 20 percent in uniaxial compression tests, which show an inflection in the stress-strain curves of Zr-based bulk metallic glasses, are shown to be a spurious effect due to mechanical interlocking of cracks with shear bands. This type of stress-strain behaviour is misinterpreted as an actual deformation in the literature. The effect of mechanical interlocking is explained by fractographic analysis.
展开▼
