Nanoscale structure and structural relaxation in Zr50Cu45Al5 bulk metallic glass.

نویسندگان

  • Jinwoo Hwang
  • Z H Melgarejo
  • Y E Kalay
  • I Kalay
  • M J Kramer
  • D S Stone
  • P M Voyles
چکیده

Hybrid reverse Monte Carlo simulations of the structure of Zr50Cu45Al5 bulk metallic glass incorporating medium-range structure from fluctuation electron microscopy data and short-range structure from an embedded atom potential produce structures with significant fractions of icosahedral- and crystal-like atomic clusters. Similar clusters group together into nanometer-scale regions, and relaxation transforms crystal-like clusters into icosahedral clusters. A model refined against only the potential does not agree with the fluctuation microscopy data and contains few crystal-like clusters.

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عنوان ژورنال:
  • Physical review letters

دوره 108 19  شماره 

صفحات  -

تاریخ انتشار 2012