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| rdf:type
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| Description
| - The aim of the paper is to assess the possibility of formation of non-metallic inclusions (specifically complex sulphides) in steels in dependence on chemical composition of steels and on rate of crystallization by means of thermodynamic calculations. The original thermodynamic model is used for study of the inclusions formation. The model enables quantitative description of probability of formation of such compounds in steel melt during crystallization and solidification. Standardly applied thermodynamic and phase quantities appear in the thermodynamic model. The Scheil model is considered for segregation. This model assumes full diffusion in liquid and completely suppressed diffusion in solid phase. The above mentioned approach is applied for appreciation of influence of conditions on inclusions formation for laboratory prepared samples with different chemical composition (different content of C, Mn, Ti and S), and with different kinetics of crystallization (precisely defined cooling rate). Experimentally measured concentrations of elements, which form complex inclusions, are subsequently used for thermodynamic description of chemical reaction representing their formation. The following main results were obtained on the basis of thermodynamic calculations: (i) formation of analyzed complex sulphides would always precede formation of simple sulphides or carbo-sulphides; (ii) smaller value of cooling rate increased thermodynamic probability of complex sulphides formation in the area with higher fraction of inter-dendritic melt; (iii) both concentration of the given elements and cooling rate influence the start of complex sulphides formation.
- The aim of the paper is to assess the possibility of formation of non-metallic inclusions (specifically complex sulphides) in steels in dependence on chemical composition of steels and on rate of crystallization by means of thermodynamic calculations. The original thermodynamic model is used for study of the inclusions formation. The model enables quantitative description of probability of formation of such compounds in steel melt during crystallization and solidification. Standardly applied thermodynamic and phase quantities appear in the thermodynamic model. The Scheil model is considered for segregation. This model assumes full diffusion in liquid and completely suppressed diffusion in solid phase. The above mentioned approach is applied for appreciation of influence of conditions on inclusions formation for laboratory prepared samples with different chemical composition (different content of C, Mn, Ti and S), and with different kinetics of crystallization (precisely defined cooling rate). Experimentally measured concentrations of elements, which form complex inclusions, are subsequently used for thermodynamic description of chemical reaction representing their formation. The following main results were obtained on the basis of thermodynamic calculations: (i) formation of analyzed complex sulphides would always precede formation of simple sulphides or carbo-sulphides; (ii) smaller value of cooling rate increased thermodynamic probability of complex sulphides formation in the area with higher fraction of inter-dendritic melt; (iii) both concentration of the given elements and cooling rate influence the start of complex sulphides formation. (en)
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| Title
| - On thermodynamic description of complex sulphides formation in steels
- On thermodynamic description of complex sulphides formation in steels (en)
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| skos:prefLabel
| - On thermodynamic description of complex sulphides formation in steels
- On thermodynamic description of complex sulphides formation in steels (en)
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| skos:notation
| - RIV/61989100:27360/11:86080747!RIV12-GA0-27360___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA106/08/0606), P(GAP107/11/1566)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27360/11:86080747
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - thermodynamic description; steel; non-metallic inclusions (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - 20th Anniversary International Conference on Metallurgy and Materials: METAL 2011
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Dobrovská, Jana
- Stránský, Karel
- Francová, Hana
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open...ain/vavai/riv/wos
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
| |
| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
| |
| http://localhost/t...ganizacniJednotka
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