Giant changes in atomic dynamics on microalloying metallic melt
نویسندگان
چکیده
منابع مشابه
Atomic Dynamics in Metallic Liquids and Glasses
How atoms move in metallic glasses and liquids is an important question in discussing atomic transport, glass formation, structural relaxation and other properties of metallic glasses. While the concept of free-volume has long been used in describing atomic transport, computer simulations and isotope measurements have shown that atomic transport occurs by a much more collective process than ass...
متن کاملAtomic dynamics of alumina melt: A molecular dynamics simulation study
The atomic dynamics of Al2O3 melt are studied by molecular dynamics simulation. The particle interactions are described by an advanced ionic interaction model that includes polarization effects and ionic shape deformations. The model has been shown to reproduce accurately the static structure factors S(Q) from neutron and x-ray diffraction and the dynamic structure factor S(Q,ω) from inelastic ...
متن کاملAtomic Insights into the Melting Behavior of Metallic Nano-catalysts
In the present study, molecular dynamics simulations have been utilized to provide fundamental understanding of melting behavior of pure Pd and Pt nanoparticles with the size of 10 nm in diameter, both free and graphene-supported during continuous heating. The embedded atom method is employed to model the metal-metal interactions, whereas a Lennard-Jones potential is applied to describe the met...
متن کاملTexturing by cooling a metallic melt in a magnetic field.
Processing in a magnetic field leads to the texturing of materials along an easy-magnetization axis when a minimum anisotropy energy exists at the processing temperature; the magnetic field can be applied to a particle assembly embedded into a liquid, or to a solid at a high diffusion temperature close to the melting temperature or between the liquidus and the solidus temperatures in a region o...
متن کاملComment on ‘‘High-Frequency Dynamics in Metallic
A recent Letter reports x-ray Brillouin data on a metallic glass, Ni33Zr67 [1]. Longitudinal acoustic (LA) excitations of energy @ are found well above an independently observed boson peak (BP), located at @ BP ’ 3 meV. The authors claim that Ni33Zr67 is strong in the sense of Angell [2]. From the linewidth of the acoustic signal, they also claim a Ioffe-Regel (IR) crossover, = , at @ IR ’ 23 m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2009
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.3263950