TEMPERATURES OF LIQUIDUS, SOLIDUS AND PERITECTIC TRANSFORMATION OF FECCR BASED ALLOYS

1 DROZDOVÁ Ľubomíra
Co-authors:
1,2 SMETANA Bedřich 1,2 ZLÁ Simona 1,2 KALUP Aleš 1,2 KAWULOKOVÁ Monika 1,2 ROSYPALOVÁ Silvie 1,2 ŘEHÁČKOVÁ Lenka 3 VONTOROVÁ Jiřina 2,4 STROUHALOVÁ Michaela
Institutions:
1 Department of Physical Chemistry and Theory of Technological Processes, VŠB-Technical University of Ostrava, 17. listopadu 15, Ostrava-Poruba, 708 33, Czech Republic, EU lubomira.drozdova@vsb.cz; bedrich.smetana@vsb.cz
2 Regional material science and technology centre, VŠB-Technical University of Ostrava, 17. listopadu 15, Ostrava-Poruba, 708 33, Czech Republic, EU
3 Department of Chemistry, VŠB-Technical University of Ostrava, 17. listopadu 15, Ostrava-Poruba, 708 33, Czech Republic, EU
4 Department of Metallurgy and Foundry, VŠB-Technical University of Ostrava, 17. listopadu 15, OstravaPoruba, 708 33, Czech Republic, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
65-70
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
160 views / 81 downloads
Abstract

Three alloys based on Fe-C-Cr were studied. These alloys contained carbon in a range of 0.31 – 0.38 wt.% and chrome 1.06 – 4.99 wt.%. Temperatures of solidus (TS), liquidus (TL) and peritectic transformation (TP) were studied in high temperature region. These temperatures were obtained using two thermal analysis methods: "Direct" Thermal Analysis (TA) and Differential Thermal Analysis (DTA). The Setaram Setsys 18TM was used for experiments with use of DTA method. Measurements were done in inert atmosphere of pure argon by heating rate of 10 °C.min-1. The Netzsch STA 449 F3 Jupiter was used for experiments with use of "direct" TA method. Measurements were done in inert atmosphere of pure argon by heating and cooling rate of 5 °C.min-1. Phase transformation temperatures were obtained by heating and cooling process. Experimental data were compared and discussed with calculation results using IDS (Solidification analysis package) and SW ThermoCalc with use of the TCFE8 (ThermoCalc Fe-based alloys) database. Temperatures of solidus (TS), liquidus (TL) and peritectic transformation (TP) were obtained. Difference between experimental and theoretical values temperatures of liquidus was relatively low. With increasing content of carbon and chrome grew the difference between theoretical and experimental values by temperature of solidus and peritectic transformation.

Keywords: DTA, “direct” TA, temperature of phase transformation, Thermo-Calc, Fe-C-Cr alloys

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