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Study of Fe-C-based alloys by dynamic methods of thermal analysis

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: of this paper is to determine the temperatures of liquidus/solidus temperatures for multicomponent Fe-C-based alloys (industrially produced steel grades). The obtained results could be used in settings of conditions of steel casting and/or in the numerical simulations of processes occurring during casting and solidification of steel. Design/methodology/approach: Two modern apparatus for dynamic thermal analysis were used. Measurements of liquidus/solidus temperatures were realized by two thermal analysis methods. Experiments by the differential scanning calorimetry were done using the new one Setaram Multi High Temperature Calorimeter with 3D sensor (smaller samples about 2.6 g). The direct thermal analysis was used for large samples (23 g) at the STA 449 F3 Jupiter equipment. Findings: The differences between calculated and experimentally obtained values of liquidus/solidus temperatures were found. Also temperatures of solidification process are different than for “equilibrium” conditions. Practical implications: Presented results will be implemented into steel production practice - lowering of superheating of steel during ingot casting. The obtained temperatures will be implemented also into numerical simulations of ingot solidification. Originality/value: Two thermal analysis methods with different sample mass of steel was used under conditions of one research team. The direct cooperation between steel plant experts and university research team was applied. The utilization of results is the next phases of cooperated research of the authors.
Rocznik
Strony
694--699
Opis fizyczny
Bibliogr. 13 poz., rys., tab.
Twórcy
autor
  • Department of Metallurgy and Foundry, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
autor
  • Department of Physical Chemistry and Theory of Technological Processes, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
autor
  • Department of Physical Chemistry and Theory of Technological Processes, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
  • Department of Metallurgy and Foundry, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
autor
  • Department of Metallurgy and Foundry, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
autor
  • Department of Metallurgy and Foundry, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
autor
  • Department of Metallurgy and Foundry, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
  • Department of Physical Chemistry and Theory of Technological Processes, and Regional Materials Science and Technology Centre, Faculty of Metallurgy and Materials Engineering, VŠB-Technical University of Ostrava, 17. listopadu 15/2173, Ostrava-Poruba, Czech Republic
  • Vítkovice Heavy Machinery a.s., Ruská 2887/101, Ostrava-Vítkovice, Czech Republic
Bibliografia
  • [1] K. Michalek, L. Čamek, K. Gryc, M. Tkadlečková, T. Huczala, V. Troszok, Desulphurization of the high- alloyed and middle-alloy steel under the conditions of an EAF by means of synthetic slag based on CaO-Al2O3, Materiali in tehnologije 46/3 (2012) 97-103.
  • [2] L. Socha, J. Bažan, K. Gryc, P. Styrnal, V. Pilka, Z. Piegza, Assessment briquetting fluxing agent influence on refining effects of slag during steel processing at the secondary metallurgy unit, Proceedings of the 20th Anniversary International Conference on Metallurgy and Materials METAL’2011, Brno, 2011, 163-169.
  • [3] K. Michalek, K. Gryc, J. Morávka Physical modelling of bath homogenisation in argon stirred ladle, Metalurgija 48/4 (2009) 215-218.
  • [4] K. Michalek, K. Gryc, M. Tkadleckova, D. Bocek, Model study of tundish steel intermixing and operational verification, Archives of Metallurgy and Materials 57/1 (2012) 291-296
  • [5] K. Janiszewski, Liquid fteel filtration in the process of steel casting in the cc machine, Proceedings of 20th Anniversary International Conference on Metallurgy and Materials METAL’2011, Brno, 2011, 163-169.
  • [6] M. Tkadlečková, P. Machovčák , K. Gryc, P. Klus, K. Michalek, L. Socha, M. Kováč, Verification of thermo - physical parameters of numerical model of filling and solidifi cation of heavy steel ingot, Materials and technology 46/3 (2012) 7-10 (in Slovenian).
  • [7] P. Machovčák, A. Opler, M. Tkadlečková, K. Michalek, K. Gryc, V. Krutis, M. Kováč, The utilization of numerical modeling to optimize the production of heavy forging ingots in vitkovice heavy machinery, Proceedings of the 1st International Conference on Ingot Casting, Rolling and Forging ICRF’2012, Aachen, 2012 (in print).
  • [8] P.K. Gallagher, Handbook of thermal analysis and calorimetry, Principles and Practice, Elsevier, 2003, 691.
  • [9] B. Smetana et al., Phase transformation temperatures of pure iron and low alloyed steels in the low temperature region using DTA, International Journal of Materials Research 101/3 (2010) 398-408.
  • [10] B. Smetana et al., Application of high temperature DTA technique to Fe based systems, Proceedings of the 19th International Conference on Metallurgy and Materials METAL’2010, Rožnov pod Radhoštěm, 2010, 357-362.
  • [11] S. Zlá et al., Differential Thermal Analysis and Phase Analysis of Nickel Based Super-Alloy IN 738LC, Proceedings of 19th International Conference on Metallurgy and Materials METAL’2010, 790-795.
  • [12] M. Žaludová et al., Study of temperatures of phase transformations of fe-based metallic systems in the temperature range below 1000°C, Proceedings of 19th International Conference on Metallurgy and Materials METAL’2010, 350-356.
  • [13] G. Grunbaum et al., A Guide to the solidification of steels, Jernkontoret, Stockholm, 1977, 162.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-50338fec-5406-4287-b469-39cd8c4b0640
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