IMPORTANT ASPECTS OF PHASE TRANSFORMATIONS TEMPERATURES STUDY OF STEELS BY USE OF THERMAL ANALYSIS METHODS

1,2 SMETANA Bedřich
Co-authors:
1,2 ŽALUDOVÁ Monika 1,2 ZLÁ Simona 1,2 ROSYPALOVÁ Silvie 1 KALUP Aleš 1,2 DOBROVSKÁ Jana 1,2 MICHALEK Karel 1,2 STROUHALOVA Michaela 1 DOSTÁL Petr 3 VÁLEK Ladislav
Institutions:
1 VSB-TUO, Faculty of Metallurgy and Materials Engineering, Ostrava (FMME), Czech Republic, EU, bedrich.smetana@vsb.cz
2 Regional Materials Science and Technology Centre (RMSTC), Laboratory for Modelling of Processes in the Liquid and Solid Phases, bedrich.smetana@vsb.cz
3 ArcelorMittal Ostrava a.s., Research, Ostrava, Czech Republic, EU, ladislav.valek@arcelormittal.com
Conference:
23rd International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 21 - 23, 2014
Proceedings:
Proceedings 23rd International Conference on Metallurgy and Materials
Pages:
93-98
ISBN:
978-80-87294-52-9
ISSN:
2694-9296
Published:
18th June 2014
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
317 views / 143 downloads
Abstract

The paper deals with the study of phase transitions temperatures (mainly solidus and liquidus) with use of different thermal analysis methods. The key thermal analysis methods are at the present days DTA (Differential Thermal Analysis), DSC (Differential Scanning Calorimetry) and “direct” thermal analysis. The study presents the basic principles of these methods, characteristics, advantages and disadvantages. There are presented results from the high temperature region (above) 1000 °C with focus on the melting and solidifying region of multicomponent alloys such as steels. The paper discusses obtained results with three mentioned methods at heating/cooling process, with different loads of samples and other factors that can influence the obtained results. The evaluation of heating/cooling curves, DTA (DSC) – curves at heating and cooling is demonstrated. The obtained solidus and liquidus temperatures are compared and discussed.

Keywords: Thermal analysis, conditions, methodology, liquidus, solidus, steel

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