Structural stability during remelting of foundry binary alloys

Author:

Marukovich E. I.1,Stetsenko V. Yu.1,Stetsenko A. V.2

Affiliation:

1. Association of Foundrymen and Metallurgists of Belarus

2. Belarusian‑Russian University

Abstract

A nanostructural mechanism of structural stability during remelting of foundry binary alloys has been developed. This mechanism is determined by the stability of the centers of crystallization of microcrystals of α‑phases and β‑phases. It is shown that this stability depends on the concentration of adsorbed hydrogen and oxygen atoms. The higher these concentrations, the less stable the centers of crystallization of α‑phase and β‑phase microcrystals in melts of foundry binary alloys, and vice versa. With an increase in overheating and (or) the holding time of melts of foundry binary alloys, the concentrations of adsorbed hydrogen and oxygen atoms in them increase. As a result, structural stability decreases during the remelting of foundry binary alloys.

Publisher

Belarusian National Technical University

Reference6 articles.

1. Nikitin V. I., Nikitin K. V. Nasledstvennost’ v lityh splavah [Heredity in cast alloys]. Moscow, Mashinostroenie‑1 Publ., 2005, 476 p.

2. Marukovich E. I., Stetsenko V. Yu. Modificirovanie splavov [Modification of alloys]. Minsk, Belaruskaya navuka Publ., 2009, 192 p.

3. Marukovich E. I., Stetsenko V. Yu. Puti resheniya problemy strukturnoj nasledstvennosti splavov [Ways to solve the problem of structural heredity of alloys]. Lit’e i metallurgiya = Foundry production and metallurgy, 2019, no. 1, pp. 21–23.

4. Marukovich E. I., Stetsenko V. Yu. Nanostrukturnaya teoriya metallicheskih rasplavov [Nanostructural theory of metal melts]. Lit’e i metallurgiya = Foundry production and metallurgy, 2020, no. 3, pp. 7–9.

5. Marukovich E. I., Stetsenko V. Yu., Stetsenko A. V. Nanostrukturnaya kristallizaciya litejnyh splavov [Nanostructured crystallization of foundry alloys]. Lit’e i metallurgiya = Foundry production and metallurgy, 2022, no. 3, pp. 13–19.

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