Determination of phase transformations temperatures and heat capacities of alloys based on Fe-C-Cr

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

Determination of phase transformations temperatures and heat capacities of alloys based on Fe-C-Cr

Popis výsledku v původním jazyce

Two alloys based on Fe-C-Cr were studied. Alloy A contained carbon of 0.410 wt. % and chromium of 1.083 wt. %. Alloy B contained carbon of 0.430 wt. % and chromium of 4.980 wt. %. Temperatures of phase transformations and heat capacities were studied in the low temperature region. Temperatures of phase transformations were obtained using Differentianl Thermal Analysis (DTA) and heat capacities were obtained using Differential Scanning Calorimetry (DSC). The Setaram Setsys 18TM was used for experiments with the use of DTA method. Measurements were done in inert atmosphere of pure argon by a heating rate of 10°C min-1. The Setaram MHTC (Multi High Temperature Calorimeter) 96 with 3D DSC sensor was used for experiments with the use of DSC method. Measurements were done in inert atmosphere of pure argon by a heating and cooling rate of 5°C min-1. Phase transformation temperatures were obtained by heating process and were also approximated to “equilibrium conditions”. The experimental data were compared and discussed with the calculation results using SW Thermo Calc with the use of the TCFE8 (Thermo-Calc Fe-based alloys) database. On the DSC were observed of heat capacities of M7C3, M23C6 carbides and Sigma phase formation, which was supported by calculation of presence of mentioned phases as a function of temperature in SW Thermo-Calc.

Název v anglickém jazyce

Determination of phase transformations temperatures and heat capacities of alloys based on Fe-C-Cr

Popis výsledku anglicky

Two alloys based on Fe-C-Cr were studied. Alloy A contained carbon of 0.410 wt. % and chromium of 1.083 wt. %. Alloy B contained carbon of 0.430 wt. % and chromium of 4.980 wt. %. Temperatures of phase transformations and heat capacities were studied in the low temperature region. Temperatures of phase transformations were obtained using Differentianl Thermal Analysis (DTA) and heat capacities were obtained using Differential Scanning Calorimetry (DSC). The Setaram Setsys 18TM was used for experiments with the use of DTA method. Measurements were done in inert atmosphere of pure argon by a heating rate of 10°C min-1. The Setaram MHTC (Multi High Temperature Calorimeter) 96 with 3D DSC sensor was used for experiments with the use of DSC method. Measurements were done in inert atmosphere of pure argon by a heating and cooling rate of 5°C min-1. Phase transformation temperatures were obtained by heating process and were also approximated to “equilibrium conditions”. The experimental data were compared and discussed with the calculation results using SW Thermo Calc with the use of the TCFE8 (Thermo-Calc Fe-based alloys) database. On the DSC were observed of heat capacities of M7C3, M23C6 carbides and Sigma phase formation, which was supported by calculation of presence of mentioned phases as a function of temperature in SW Thermo-Calc.

Druh

O - Ostatní výsledky

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)

Rok uplatnění

2017

Kód důvěrnosti údajů

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