Influence of the Carbon Content on the Kinetics of Phase Transformations During Continuous Heating from As-Quenched State in a Cr-Mn-Mo Model Alloys

• Autorzy: Dziurka R. , Pacyna J.

Warianty tytułu

PL

Wpływ Zawartości Węgla Na Kinetykę Przemian Fazowych Podczas Nagrzewania Ze Stanu Zahartowanego W Stopach Modelowych Cr-Mn-Mo

• Języki publikacji: EN

Abstrakty

EN

The presented work concerns the research on the kinetics of phase transformations during continuous heating from as-quenched state of three Cr-Mn-Mo model alloys with a different carbon content. The kinetics of phase transformations during continuous heating of investigated alloys was presented on the CHT (Continuous, Heating, Transformation) diagrams. The CHT diagrams were made on the grounds of dilatograms recorded for quenched samples, heated with various rates. Also the methodology of the dilatometric samples preparation and the method of the characteristic points determination was described. The investigated alloys are the model alloys. Taking into account their chemical compositions the possibility of improving their properties by means of the heat treatment can be expected. The investigations of the carbon influence on microstructures of model alloys with Cr-Mn-Mo were carried out. Broadening the knowledge on the carbon influence on the kinetics of phase transformations during continuous heating from as-quenched state, will help in designing new alloys with a better properties.

PL

Niniejsza praca zawiera badania kinetyki przemian fazowych przy nagrzewaniu ze stanu zahartowanego trzech modelowych stopów Cr-Mn-Mo o różnej zawartości węgla. Kinetyka przemian fazowych przy nagrzewaniu badanych stopów jest przedstawiona za pomocą wykresów CHT. Wykresy CHT zostały wykonane na podstawie dylatogramów nagrzewania z różnymi szybkościami uprzednio zahartowanych próbek. Ponadto w pracy zamieszczono metodologie przygotowania próbek do badań dylatometrycznych i przykłady wyznaczania punktów charakterystycznych. Badane stopy sa stopami modelowymi. Biorąc pod uwagę ich składy chemiczne istnieje możliwość poprawy ich właściwości za pomoca obróbki cieplnej. W pracy została podjęta próba zbadania wpływu węgla na mikrostrukture stopów Cr-Mn-Mo po odpuszczaniu. Niniejsze badania poszerza wiedzę na temat wpływu węgla na kinetykę przemian fazowych przy nagrzewaniu ze stanu zahartowanego, co pomoże w projektowaniu nowych stopów o lepszych własnościach.

Słowa kluczowe

EN

kinetic phase transformations during continuous heating from as-quenched state; epsilon carbide; cementite; retained austenite; CHT diagrams; model alloys

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2012
• Tom: Vol. 57, iss. 4
• Strony: 943--950
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Dziurka R.

autor

Pacyna J.

• AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, 30-059 Kraków, 30 Mickiewicza av., Poland

Bibliografia

• [1] R.W.K. Honeycombe, H.K.D.H. Bhadeshia, Steels. Microstructure and properties, 2nd ed., London (1995).
• [2] A.K. Sinha, Physical Metallurgy Handbook, The Mc Graw-Hill Companies, Inc. (2003).
• [3] Steel – A Handbook for Materials Research and Engineering, V1 Fundamentals, VDE, Berlin – Heidelberg – New York – London – Paris, (2004).
• [4] S. Wilmes, H. Becker, R. Krumpholz, W. Verderber, Tool Steel, Steel. A Handbook for Materials Researched and Engineering, Springer – Verlag – Stahleisen, mbH 2, 302 (1993).
• [5] J. Pacyna, R. Dabrowski, G. Zajac, Effect of carbon content on the fracture toughness of Ni-Cr-Mo steels, Archives of Metallurgy and Materials 53, 3, 803-807 (2008).
• [6] P. Bała, J. Pacyna, The influence of pre-tempering on the mechanical properties of HS6-5-2 high speed steel, Archives of Metallurgy and Materials 53, 3, 795-801 (2008).
• [7] P. Bała, J. Pacyna, The kinetics of phase transformations during tempering of the new hot working tool steel designed for a large size forging dies, Steel Research International, Special edition Metal forming 2, 407-413 (2008).
• [8] P. Bała, Tempcore process analysis based on the kinetics of phase transformations Archives of Metallurgy and Materials Volume: 54 Issue: 4 Special Issue: SI Pages: 1223-1230 Published: (2009).
• [9] R. Dabrowski, The effect of vanadium on the structure and properties of quenched and tempered model alloy steels, Ph.D. Thesis, AGH University of Science and Technology, Kraków (2002).
• [10] G. Zajac, The structure and properties of quenched and tempered steels with nickel, Ph.D. Thesis, AGH University of Science and Technology, Kraków (2006).
• [11] P. Bała, The kinetics of phase transformations Turing tempering of tool steels with different carbon content, Archives of Metallurgy and Materials 54, 491-498 (2009).
• [12] P. Bała, J. Pacyna, J. Krawczyk, Continuous heating from as-quenched state in a new hot-work steel, Archives of Materials Science and Engineering 28, 517-524 (2007).
• [13] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during tempering of Cr-Mo-V medium carbon steel, Journal of Achievements in Materials and Manufacturing Engineering 20, 79-82 (2007).
• [14] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during tempering of low Allom medium carbon steel. Archives of Materials Science and Engineering 28, 98-104 (2007).
• [15] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during the tempering of HS6-5-2 steel. Archives of Materials Science and Engineering 35, 69-76 (2009).
• [16] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during the tempering of HS18-0-1 high-speed steel. Journal of Achievements in Materials and Manufacturing Engineering 19, 19-25 (2006).
• [17] P. Bała, J. Pacyna, J. Krawczyk, The kinetics of phase transformations during the tempering of HS6-5-2 high-speed steel. Journal of Achievements in Materials and Manufacturing Engineering 18, 47-50 (2006).
• [18] P. Bała, J. Pacyna, The influence of kinetics of phase transformations during tempering on high-speed steels mechanical properties. Journal of Achievements in Materials and Manufacturing Engineering 43, 64-71 (2010).
• [19] R. Dabrowski, R. Dziurka, Tempering temperature effects on hardness and impact toughness of 56NiCrMo7 steel. Archives of Metallurgy 56, 5-11 (2011).
• [20] R. Dziurka, J. Pacyna, The influence of carbon content on the kinetics of phase transformations of undercooled austenite of the Cr-Mn-Mo model alloys. Archives of Materials Science and Engineering 47, 77-84 (2011).