Properties of amorphous alloys of Al–REM–Ni and Al–REM–Ni–Fe systems with nanocrystalline structure

• Published in: Materials science (New York, N.Y.) Vol. 48; no. 4; pp. 555 - 559
• Main Authors: Boichyshyn, L. M., Hertsyk, O. M., Kovbuz, M. O., Pereverzeva, T. H., Kotur, B. Ya
• Format: Journal Article
• Language: English
• Published: Boston Springer US 2013; Springer; Springer Nature B.V
• Subjects: Annealing; Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and anti-corrosives; Hardness; Materials Science; Metallic glasses; Solid Mechanics; Specialty metals industry; Structural Materials; corrosion; microhardness; electric resistance; nanocrystallization; amorphous metallic alloys
• ISSN: 1068-820X; 1573-885X
• DOI: 10.1007/s11003-013-9537-y

We have investigated the influence of annealing on the physicochemical properties of amorphous alloys based on aluminum. It has been established that, after annealing at the temperature of the first stage of crystallization, an X-ray amorphous structure with an insignificant volume fraction of a disordered nanocrystalline phase forms. In this case, the polarization resistance of the surface of the alloys in a 0.5 М aqueous solution of NaOH increases substantially, and the free potential shifts in the direction to anode potentials. In structural transformations under these conditions, the microhardness of the alloys increases to a maximum degree.