Analysis of the atomic structure of metallic glass of composition Al87Ni10Nd3 with the use of a fragmentary model

Abstract

Use of a fragmentary model in the analysis of the atomic structure of an Al 87 Ni 10 Nd 3 amorphous metal alloy made it possible to determine that it has fragments of the structures of three phases, namely, Al, Al 3 Ni, and Al 3 Nd. After crystallization of the alloy under the action of pulse photon irradiation, polycrystals of pure aluminum and two Al 3 Ni and Al 4 Nd intermetallides were found in it. Because fragments of structure Al 4 Nd were not observed in the amorphous state, it follows that atoms which form fragments structure Al 3 Nd rearrange to structure Al 4 Nd upon crystallization.

Crystallization behavior, mechanical properties, and corrosion resistance of an amorphous Fe76.5P13.6Si4.8Mn2.4V0.2C2.5 alloy

“…A cluster structure in amorphous alloys may be associated with structural units that are precursors of intermetallic phases. The existence of such structural units was substantiated by Aleynikova et al [23], using an alloy of the Al-Ni-Nd system as an example, by comparing an experimentally determined radial atomic pair distribution function to one calculated for a system of appropriate structural units.…”