Comparison of liquidus and solidus temperatures of steel cast into ingots identified by different thermo-analytical methods

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of liquidus and solidus temperatures of steel cast into ingots identified by different thermo-analytical methods

Popis výsledku v původním jazyce

In the framework of optimising, correct setting of the casting process, knowledge of solidus temperature (TS) and especially liquidus temperature (TL) of produced steel grade is necessary. There are options to determine these temperatures: the use of empirical equations or calculations by specialised programs (thermodynamic databases). These calculations are based on the data of steel chemical composition and final temperature of phase transformation is then its reflection. TS and TL values then may not completely correspond to reality as well. It is very appropriate to employ a combination of different methods of thermal analysis and theoretical prediction for confrontation of experimental and calculated TL and TS. Three modern devices for high temperature thermal analysis and two specialised programs of theoretical prediction are available at the Faculty of Metallurgy and Materials Engineering. Direct thermal analysis method (dirTA) and parallel currently mass-enhanced method of thermal analysis, differential thermal analysis (DTA), were used for determination of TL and TS of studied real steel grades. Simultaneous application of both methods allows to reduce significantly disadvantages of each method and recommend proper TL and TS into the casting process and real conditions of industrial partner. Paper is focused on the discussion of TL and TS of steels cast into ingots (9 melts; 7 steel grades) analysed in the frame of a project TA0410035. Submitted evaluation refers an importance of the parallel utilization of different methods, their accuracy and reproducibility and also the divergences between TL and TS experimentally determined, empirically calculated and predicted by thermodynamic SWs’ calculations.

Název v anglickém jazyce

Comparison of liquidus and solidus temperatures of steel cast into ingots identified by different thermo-analytical methods

Popis výsledku anglicky

In the framework of optimising, correct setting of the casting process, knowledge of solidus temperature (TS) and especially liquidus temperature (TL) of produced steel grade is necessary. There are options to determine these temperatures: the use of empirical equations or calculations by specialised programs (thermodynamic databases). These calculations are based on the data of steel chemical composition and final temperature of phase transformation is then its reflection. TS and TL values then may not completely correspond to reality as well. It is very appropriate to employ a combination of different methods of thermal analysis and theoretical prediction for confrontation of experimental and calculated TL and TS. Three modern devices for high temperature thermal analysis and two specialised programs of theoretical prediction are available at the Faculty of Metallurgy and Materials Engineering. Direct thermal analysis method (dirTA) and parallel currently mass-enhanced method of thermal analysis, differential thermal analysis (DTA), were used for determination of TL and TS of studied real steel grades. Simultaneous application of both methods allows to reduce significantly disadvantages of each method and recommend proper TL and TS into the casting process and real conditions of industrial partner. Paper is focused on the discussion of TL and TS of steels cast into ingots (9 melts; 7 steel grades) analysed in the frame of a project TA0410035. Submitted evaluation refers an importance of the parallel utilization of different methods, their accuracy and reproducibility and also the divergences between TL and TS experimentally determined, empirically calculated and predicted by thermodynamic SWs’ calculations.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

METAL 2017: conference proceedings : 26th International Conference on Metallurgy and Materials : (reviewed version) : May 24th-26th 2017, Hotel Voroněž I, Brno, Czech Republic, EU

ISBN

978-80-87294-79-6

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

89-96

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

24. 5. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000434346900010