Nanoscale Structure and Structural Relaxation in Zr50Cu45Al5 Bulk Metallic Glass

TitleNanoscale Structure and Structural Relaxation in Zr50Cu45Al5 Bulk Metallic Glass
Publication TypeJournal Article
Year of Publication2012
AuthorsHwang J, Melgarejo ZH, Kalay YE, Kalay I, Kramer MJ, Stone DS, Voyles PM
Journal TitlePhysical Review Letters
Date Published05
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberWOS:000303909400011
KeywordsATOMIC PACKING, FLUCTUATION MICROSCOPY, FORMING LIQUIDS, medium-range order, model, monte-carlo algorithm, probe, transition

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.

URL<Go to ISI>://WOS:000303909400011
Alternate JournalPhys. Rev. Lett.