Scientific problem of modifying of primary crystals a β -phase of silumin castings. Solutions
https://doi.org/10.21122/1683-6065-2019-2-36-38
Abstract
It is shown that the phosphorum which is contained in a silumin melt in number of 0,01–0,04% exists in the dissolved form. For a solution of the problem of modifying of primary crystals of a β -phase in silumin castings it is necessary to accept a presumption that the oxygen adsorbed by a melt promotes decay and hinders the formation of crystallization centers of primary crystals of a β -phase. The role of phosphorum comes down to reduction of concentration of the adsorbed oxygen which works as the demodifier of primary microstructure of castings.
About the Authors
E. I. Marukovich
Institute of Technology of Metals of National Academy of Sciences of Belarus
Belarus
Belarus
V. Yu. Stetsenko
Institute of Technology of Metals of National Academy of Sciences of Belarus
Belarus
Belarus
References
1. Fochenkov B. A., Ryabov V. I. Zaehvtekticheskie siluminy dlya porshnej DVS [Zaevtektichesky alpaxes for DVS pistons]. Avtomobil’naya promyshlennost’= Automotive Industry, 2002, no. 10, pp. 29–31.
2. Svojstva ehlementov. Fizicheskie svojstva: spravochnik [Properties of elements. Physical properties: reference]. P. 1. Moscow, Metallurgiya Publ., 1976. 600 p.
3. Morachevskij A. G., Sladkov I. B. Termodinamicheskie raschety v metallurgii: spravochnik [Thermodynamic calculations in metallurgy: reference]. Moscow, Metallurgiya Publ., 1985. 136 p.
4. Kubashevskij O., Olkokk K. B. Metallurgicheskaya termohimiya [Metallurgical thermochemistry]. Moscow, Metallurgiya Publ., 1982. 392 p.
5. Marukovich E. I., Stetsenko V. Yu. Modifi ovanie splavov [Modifying of alloys]. Minsk, Belaruskaya navuka Publ., 2009. 192 p.
6. Konstanty vzaimodejstviya metallov s gazami: spravochnik [Constants of interaction of metals with gases: reference]. Moscow, Metallurgiya Publ., 1987. 368 p.
7. Fiziko-himicheskie svojstva okislov: spravochnik [Physical and chemical properties of oxides: reference]. Moscow, Metallurgiya Publ., 1976. 472 p.
Review
For citations:
Marukovich E.I., Stetsenko V.Yu. Scientific problem of modifying of primary crystals a β -phase of silumin castings. Solutions. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2019;(2):36-38. (In Russ.) https://doi.org/10.21122/1683-6065-2019-2-36-38
Views:
3692
Email this article 