Submitted for the MAR14 Meeting of The American Physical Society Atomistic study of rejuvenation of amorphous metals via thermal loading MASATO WAKEDA, Osaka University, JUNJI SAIDA, Tohoku University, JU LI, Massachusetts Institute of Technology, SHIGENOBU OGATA, Osaka University — Rejuvenation is the structural excitation of amorphous system accompanied by enthalpy and free volume rise, and i...

We have studied the amorphization behavior of Mg85KxY15Cux (xZ20–40) alloy powders synthesized by mechanical alloying technique. The as-milled powders were mainly amorphous after 10 h of milling. The thermal stability of these Mg85KxY15Cux glassy powders was investigated by differential scanning calorimeter (DSC). The ranges of Tg, Tx and DTx are around 430–459, 467–497, and 30–46 K, respective...

A new amorphous compound with the initial atomic composition Al43Li43Y6Ni8 applied as electrode material for Li-ion batteries is investigated. Unlike other amorphous compounds so-far investigated as anode materials, it already contains Li as a base element in the uncycled state. The amorphous compound powder is prepared by high energy ball milling of a master alloy. It shows a strongly enhanced...

We describe the application of the locally-self-consistent-multiple-scattering (LSMS)[1] method to amorphous alloys. The LSMS algorithm is optimized for the Intel XP/S-150, a multiple-instruction-multiple-data parallel computer with 1024 nodes and 2 compute processors per node. The electron density at each site is determined by solving the multiple scattering equation for atoms within a specifi...

Amorphous alloys show interesting mechanical properties as well unique physical and chemical due to their atomic stacking structure. However, when partial crystallization occurs in amorphous alloys, it can impact the of original alloy. To study phenomenon Zr-based alloy, a three-dimensional alloy atomic-stacking model was established by molecular dynamics simulations, structure evolution Zr-Cu ...

Although the equilibrium phase diagram predicts that alloys in the central part of the V-Zr system should consist of V2Zr Laves phase with partial segregation of one element, it is known that under non-equilibrium conditions these materials can form amorphous structures. Here we examine the structures and stabilities of thin film V-Zr alloys deposited at room temperature by magnetron sputtering...

In-situ investigation of phase formation in nanocrystalline (Co97.5Fe2.5)89Zr7B4 alloy by high temperature x-ray diffraction Crystallization and phase evolution in an (Co 97.5 Fe 2.5) 89 Zr 7 B 4 amorphous alloy was studied by high temperature x-ray diffraction (HTXRD) and transmission electron microscopy (TEM). Co-based nano-composite alloys have zero magnetostriction and a strong response to ...