THERMODYNAMICS AND NANOSTRUCTURAL MECHANISMS OF PROCESSES OF MELTING AND CRYSTALLIZATION OF METALS
Abstract
Melting and crystallization of metals are equilibrium thermodynamic processes. As the main structural units of dendrites serve construction nanocrystals which are formed of elementary nanocrystals. The main mechanisms of processes of melting and crystallization of metals are disintegration of dendrites on nanocrystals and formation of dendrites from nanocrystals. On process of crystallization and morphology of dendrites the great influence is exerted by the hardening speed, surface-active elements and the dissolved gases.
References
1. Marukovich E. I., Stetsenko V. Yu. Modificirovanie splavov [Modifying of alloys]. Minsk, Belaruskaya navuka Publ., 2009.
2. Stetsenko V. Yu. Klastery v zhidkih metallah – stabilnye nanokristally [Clusters in liquid metals – stable nanocrystals]. Lit’e i metallurgiya = Foundry production and metallurgy, 2015, no. 2, pp. 33–35.
3. Chalmers B. Teoriya zatverdevaniya [Theory of hardening]. Moscow, Metallurgiya Publ., 1968.
4. Svojstva ehlementov. Spravochnik [Properties of elements. Reference book]. Moscow, Metallurgiya Publ., 1979.
5. Salli I. V. Kristallizaciya splavov [Crystallization of alloys]. Kiev, Naukova Dumka Publ., 1974.
6. Ershov G. S., Chernyakov V. A. Stroenie i svojstva zhidkih i tverdyh metallov [Structure and properties of liquid and solid metals]. Moscow, Metallurgiya Publ., 1978.
7. Stetsenko V. Yu. Termodinamika processa vydeleniya vodoroda pri zatverdevanii metallov i splavov [Thermodynamics of process of release of hydrogen when hardening metals and alloys]. Lit’e i metallurgiya = Foundry production and metallurgy, 2013, no. 1. pp. 55–60.
Review
For citations:
Stetsenko V.Yu. THERMODYNAMICS AND NANOSTRUCTURAL MECHANISMS OF PROCESSES OF MELTING AND CRYSTALLIZATION OF METALS. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2016;(3):45-48. (In Russ.)
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