Theoretical strength and the onset of plasticity in bulk metallic glasses investigated by nanoindentation with a spherical indenter.

@article{Bei2004TheoreticalSA,
  title={Theoretical strength and the onset of plasticity in bulk metallic glasses investigated by nanoindentation with a spherical indenter.},
  author={Hongbin Bei and Z. P. Lu and Easo P. George},
  journal={Physical review letters},
  year={2004},
  volume={93 12},
  pages={125504}
}
The mechanical behavior of bulk metallic glasses (BMGs) was investigated by nanoindentation with a spherical indenter. The transition from perfectly elastic behavior to plastic deformation was clearly observed as a pop-in event (sudden displacement excursion) on the load-displacement curves. Hertzian stress analysis was used to describe fully the load-displacement behavior during elastic deformation and to determine the theoretical shear strengths of the BMGs. 

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