Nanoscale Structure and Structural Relaxation in Zr50Cu45Al5 Bulk Metallic Glass

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

PHYSICAL REVIEW LETTERS, cilt.108, 2012 (SCI İndekslerine Giren Dergi)


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.