The characterisation of atomic structure and glass-forming ability of the Zr-Cu-Co metallic glasses studied by molecular dynamics simulations
Küçük Resim Yok
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Taylor & Francis Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In the present work, the glass formation process and structural properties of Zr50Cu50-xCox (0x50) bulk metallic glasses were investigated by a molecular dynamics simulation with the many body tight-binding potentials. The evolution of structure and glass formation process with temperature were discussed using the coordination number, the radial distribution functions, the volume-temperature curve, icosahedral short-range order, glass transition temperature, Voronoi analysis, Honeycutt-Andersen pair analysis technique and the distribution of bond-angles. Results indicate that adding Co causes similar responses on the nature of the Zr50Cu50-xCox (0x50) alloys except for higher glass transition temperature and ideal icosahedral type ordered local atomic environment. Also, the differences of the atomic radii play the key role in influencing the atomic structure of these alloys. Both Cu and Co atoms play a significant role in deciding the chemical and topological short-range orders of the Zr50Cu50-xCox ternary liquids and amorphous alloys. The glass-forming ability of these alloys is supported by the experimental observations reported in the literature up to now.
Açıklama
Anahtar Kelimeler
Bulk Metallic Alloy, Glass Transition Temperature, Short-Range Order, Chemical Short-Range Order, Molecular Dynamic Simulations, Icosahedra, Honeycutt-Andersen Index, Supercooled Liquid, Amorphous-Alloys, Transition, Crystallization, Order
Kaynak
Philosophical Magazine
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
98
Sayı
9
