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Nanometer-scale Structural Relaxation in Zr-based Bulk Metallic Glass

  • Jinwoo Hwang (a1), Hongbo Cao (a2) and Paul M. Voyles (a3)

Abstract

We investigated the influence of annealing on the nanometer-scale medium-range order in Zr54Cu38Al8 bulk metallic glass using fluctuation electron microscopy. Fluctuation microscopy experiments probing structure at a length scale of 1 nm show that the as-cast Zr bulk metallic glass contains significant medium range order. That structure is unchanged by annealing at 87% of the glass transition temperature for 24 hours, although that anneal does significantly change the differential scanning calorimetry trace.

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