Influence of rare earth metals on volumetric characteristics of Al-Ni-Co-R alloys in crystalline and liquid states

B A Rusanov; V E Sidorov

doi:10.1088/1361-648X/accdaa

Influence of rare earth metals on volumetric characteristics of Al-Ni-Co-R alloys in crystalline and liquid states

J Phys Condens Matter. 2023 Apr 27;35(29). doi: 10.1088/1361-648X/accdaa.

Authors

B A Rusanov¹, V E Sidorov^{1

2

3}

Affiliations

¹ Ural State Pedagogical University, 620091 Ekaterinburg, Russia.
² Ural Federal University, 620002 Ekaterinburg, Russia.
³ Udmurt Federal Research Center UB RAS, Izhevsk 426067, Russia.

PMID: 37068489
DOI: 10.1088/1361-648X/accdaa

Abstract

Density of Al-Ni-Co-R (R = Nd, Sm, Gd, Tb, Yb) glass-forming alloys is studied experimentally by gamma-absorption method in a wide temperature range including crystalline and liquid states. Molar volumes and thermal expansion coefficients are calculated from the experimental data. It is shown that these melts remain strongly microheterogeneous systems at small overheatings above liquidus. Some regimes of melt heat treatment before quenching are discussed.

Keywords: aluminum alloys; amorphous alloys; density; molar volume; rare-earth metals; transition metals.