Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/4496
Title: Molecular dynamics studies on glass formation of Pd-Ni alloys by rapid quenching
Authors: Özdemir Kart, Sevgi
Tomak, M.
Uludogan, M.
Çagin, T.
Keywords: Fragility and Wendt-Abraham parameter
Glass transition
Metallic glass
Molecular dynamics
Cooling
Enthalpy
Glass
Quantum theory
Quenching
Temperature distribution
Fragility
Glass formation
Rapid quenching
Structural property
Wendt-Abraham parameter
Palladium alloys
Abstract: The rapid solidification of Pd-Ni alloys is studied with the constant-pressure and constant-temperature (TPN) and the constant-volume and constant-temperature (TVN) molecular dynamics technique to obtain an atomic description of glass formation in the alloy. Quantum Sutton-Chen potential for Pd-Ni binary system is applied in the simulations. We present some thermodynamic and structural results from simulations of such glasses over a range of compositions. The structural properties are analyzed by means of pair distribution function, volume, and enthalpy as a function of temperature and concentration at the cooling rates ranging from 5 K/ps to 0.05 K/ps to see whether the Pd-Ni alloy goes into glass formation or it crystallizes. The relation between the cooling rate and glass transition temperature is revealed. We have also investigated shear viscosity in the supercooled regime. Its temperature dependence indicates fragile-liquid behavior, typical of binary metallic glasses. The results shows that the atomic mismatch and having the eutectic composition are important parameters to form glassy state. © TÜBİTAK.
URI: https://hdl.handle.net/11499/4496
ISSN: 1300-0101
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
TR Dizin İndeksli Yayınlar Koleksiyonu / TR Dizin Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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