Role of rare-earth metals (R) in the appearance of relaxation processes in AL-Ni-R metal melts

Anatoly L Beltyukov; Svetlana G Menshikova; Vladimir I Lad'yanov

doi:10.1088/1361-648X/accf57

Role of rare-earth metals (R) in the appearance of relaxation processes in AL-Ni-R metal melts

J Phys Condens Matter. 2023 May 9;35(31). doi: 10.1088/1361-648X/accf57.

Authors

Anatoly L Beltyukov¹, Svetlana G Menshikova¹, Vladimir I Lad'yanov¹

Affiliation

¹ The Udmurt Federal Research Centre of the Ural Branch of the Russian Academy of Sciences, Izhevsk, Russia.

PMID: 37084740
DOI: 10.1088/1361-648X/accf57

Abstract

The temperature and time dependences of the viscosity of liquid ternary alloys Al₈₇Ni₈Y₅, Al₈₆Ni₈La₆, Al₈₆Ni₈Ce₆, Al₈₆Ni₆Co₈, Al₈₆Ni₁₀Co₄and binary melts Al₉₀(Y/Ni/Co)₁₀have been studied after different temperature-time treatment of the melt. It is shown that long-time relaxations in the Al-TM-R melts occur only after the phase transition 'crystal-liquid' due to the melt transition from the non-equilibrium to equilibrium state. The non-equilibrium state of the melt appears due to inheriting non-equilibrium atomic groups during melting; the atomic groups have ordering characteristic of chemical compounds of the Al_xR_уtype present in solid-state alloys.

Keywords: melt; non-equilibrium and equilibrium states of melt; relaxation; viscosity.