Open AccessInfluence of chemical composition and the processing conditions on structure, thermal stability and mechanical properties of rapidly cooled Al-TM-RE-based alloys
Author(s) -
В. К. Носенко,
Taras Mika,
В.А. Машира,
O. Kandaurov,
O. M. Semirga,
Vitalii Bevz
Publication year - 2021
Publication title -
journal of physics and electronics
Language(s) - English
Resource type - Journals
eISSN - 2664-3626
pISSN - 2616-8685
DOI - 10.15421/332104
Subject(s) - materials science , nanocrystalline material , quenching (fluorescence) , isothermal process , amorphous solid , amorphous metal , phase (matter) , chemical composition , microstructure , hardening (computing) , thermal stability , metallurgy , thermal , composite material , thermodynamics , chemical engineering , alloy , crystallography , nanotechnology , chemistry , physics , organic chemistry , layer (electronics) , quantum mechanics , engineering , fluorescence
The results of t studies are directed to development of new competitive amorphous and nanocrystalline alloys as well as to improvement of technology of their manufacturing. The physical and technological aspects of interrelations between the conditions for production of rapidly quenched alloys, formation of different structural and phase states, and their properties are discussed. The influence of the chemical composition of alloys and the conditions of their quenching on the glass-forming ability, phase composition, and the structure of the rapidly cooled specimens is investigated; the regularities of the effect of alloying elements concentration on the structural features of the Al75–87(Ni,Co,B/Ga)8–20Gd1Y4 alloys obtained by superfast quenching from the liquid state are established. The thermal stability of the rapidly quenched ribbons with an amorphous structure is investigated and the temperature ranges of phase transformations at continuous heating and under isothermal conditions are found. The strength characteristics of the ribbons as a function of the content and nature of alloying elements as well as the melt cooling rate are determined. The methods of obtaining both Al-based bulk nanocrystalline composites with the shapes of rods and plates with thickness of 0.5–3.5 mm and metal matrix hardening coatings are worked out.