This article is cited in 2 papers

International conference ''Phase transitions, critical and nonlinear phenomena in condensed matter'', Makhachkala, September 15-20, 2019
Metals

Amorphous Ni$_{50}$Ti$_{50}$ alloy with nanoporous structure generated by ultrafast isobaric cooling

B. N. Galimzyanov^a, A. V. Mokshin<sup>b

a</sup> Kazan Federal University, 420008 Kazan, Russia
^b Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, 426068 Izhevsk, Russia

Abstract: Amorphous metallic foams are prospective materials due to unique combination of their mechanical and energy-absorption properties. In the present work, atomistic dynamics simulations are performed under isobaric conditions with the pressure $p$ = 1.0 atm in order to study how cooling with extremely high rates (5 $\cdot$ 10$^{13}$ - 5 $\cdot$ 10$^{14}$ K/s) affects the formation of pores in amorphous titanium nickelide. For equilibrium liquid phase, vaporization temperature Tb and the equation of states in the form of $\rho(T)$ are determined. It is found that the porosity of this amorphous solid does not depend on cooling at such high rates, whereas the pore morphology depends on the magnitude of the cooling rate. The obtained results will be in demand in study of mechanical properties of amorphous metallic foams with a nanoporous structure.

Keywords: amorphous titanium nickelide, porosity, cooling rate, atomistic dynamics.

Received: 30.12.2019
Revised: 30.12.2019
Accepted: 10.01.2020

Language: English

 English version: Physics of the Solid State, 2020, 62:5, 744–747