Nanoscale Structure and Structural Relaxation in Zr50Cu45Al5 Bulk Metallic Glass


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HWANG J., MELGAREJO Z. H., Kalay Y. E., KALAY I., KRAMER M. J., STONE D. S., ...Daha Fazla

PHYSICAL REVIEW LETTERS, cilt.108, sa.19, 2012 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 108 Sayı: 19
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1103/physrevlett.108.195505
  • Dergi Adı: PHYSICAL REVIEW LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.