Negative strain rate sensitivity and compositional dependence of fracture strength in Zr/Hf based bulk metallic glasses
Two groups of Hf/Zr based bulk metallic glasses (BMG) with various compositions were tested under quasistatic and dynamic compression. Negative strain sensitivity of fracture strength was observed in all the compositions. This was attributed to crack nucleation immediately following shear band initiation during dynamic loading, and nucleation of shear bands at increasing stress levels during quasistatic loading.
Negative strain rate sensitivity and compositional dependence of fracture strength in Zr/Hf based bulk metallic glasses.
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