Study of heat capacities of Fe-C-Cr based metallic systems with use of DSC method and theoretical calculations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F18%3A10241464" target="_blank" >RIV/61989100:27360/18:10241464 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Study of heat capacities of Fe-C-Cr based metallic systems with use of DSC method and theoretical calculations

Popis výsledku v původním jazyce

Seven alloys based on Fe-C-Cr were studied. Five alloys were model alloys based on Fe-C-Cr and there were compared with two steel with the similar composition. Model alloys contained carbon of 0.34 wt. % and chromium in a range of 0.92 - 4.76 wt. %. Steels contained carbon in the range 0.41 - 0.43 wt. % and chromium in the range 1.08 - 4.98 wt. %. Heat capacities were studied in a low and high-temperature region. The experimental heat capacities (&quot;apparent heat capacities&quot;) were obtained using Differential Scanning Calorimetry (DSC) with use of a continuous method. The Setaram MHTC (Multi High-Temperature Calorimeter) 96 Line with a 3D DSC sensor was used for experiments with the use of DSC method. Measurements were done in an inert atmosphere of pure argon by a heating rate of 5oC/min. The experimental data were compared and discussed with the calculation results using SW Thermo Calc with the use of the TCFE8.1 (Thermo-Calc Fe-based alloys) database. Experimentally and theoretically obtained values for all alloys showed the same trend in the temperature range 474.15 - 950.15 K, 1188.15 - 1650.15 K and 1794.15 - 1853.15 K. The experimentally obtained heat capacities were within the range of 0.41 - 1.04 J/K.g. Steel with the content of carbon 0.41 wt. % and chromium 1.08 wt. % had values of heat capacities very close to model alloys in the low and high temperature area. Steel with the content of carbon 0.43 wt. % and chromium 4.98 wt. % had values of heat capacities higher than model alloys except for phase transformations.

Název v anglickém jazyce

Study of heat capacities of Fe-C-Cr based metallic systems with use of DSC method and theoretical calculations

Popis výsledku anglicky

Seven alloys based on Fe-C-Cr were studied. Five alloys were model alloys based on Fe-C-Cr and there were compared with two steel with the similar composition. Model alloys contained carbon of 0.34 wt. % and chromium in a range of 0.92 - 4.76 wt. %. Steels contained carbon in the range 0.41 - 0.43 wt. % and chromium in the range 1.08 - 4.98 wt. %. Heat capacities were studied in a low and high-temperature region. The experimental heat capacities (&quot;apparent heat capacities&quot;) were obtained using Differential Scanning Calorimetry (DSC) with use of a continuous method. The Setaram MHTC (Multi High-Temperature Calorimeter) 96 Line with a 3D DSC sensor was used for experiments with the use of DSC method. Measurements were done in an inert atmosphere of pure argon by a heating rate of 5oC/min. The experimental data were compared and discussed with the calculation results using SW Thermo Calc with the use of the TCFE8.1 (Thermo-Calc Fe-based alloys) database. Experimentally and theoretically obtained values for all alloys showed the same trend in the temperature range 474.15 - 950.15 K, 1188.15 - 1650.15 K and 1794.15 - 1853.15 K. The experimentally obtained heat capacities were within the range of 0.41 - 1.04 J/K.g. Steel with the content of carbon 0.41 wt. % and chromium 1.08 wt. % had values of heat capacities very close to model alloys in the low and high temperature area. Steel with the content of carbon 0.43 wt. % and chromium 4.98 wt. % had values of heat capacities higher than model alloys except for phase transformations.

Druh

O - Ostatní výsledky

CEP obor

—

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)

Rok uplatnění

2018

Kód důvěrnosti údajů

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