While experiments have been conducted on bulk metallic glasses (BMGs) in the quasi-static strain-rate regime (i.e. 10~(-5) - 10~(-1)/s), data on their behavior at elevated strain-rates (> 10~2/s), particularly in the high strain-rate (> 10~4/s) loading regime, and very high pressures (> 3 GPa) have been limited. In LM-1 (Zr_(41.25)Ti_(13.75)Cu_(12.5)Ni_(10)Be_(22.5)), the results from a range of experiments have shown differing observations on the strain-rate sensitivity of BMGs. Stress concentrations, which are artifacts of the experimental geometry employed, may be responsible for the observed negative strain-rate sensitivity in some BMGs. Limited work has also been conducted using plate-impact experiments to examine stress-strain behavior at higher strain-rates. These plate-impact experiments are also useful to examine the effects of high normal pressures on the flow and fracture behavior; previous experiments have employed superimposed hydrostatic stresses up to 1.5 GPa.
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