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Influence of plastic deformation on CCT-diagrams of new-developed microalloyed steel

Wybrane pełne teksty z tego czasopisma
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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: The aim of the paper is to investigate the influence of plastic deformation and cooling conditions on a structure and a shape of CCT-diagrams of new-developed Nb-Ti-V microalloyed steel. Design/methodology/approach: The diagrams of undeformed and plastically-deformed supercooled austenite transformations for Nb-Ti-V microalloyed steel were determined. A part of the specimens were austenitized at a temperature of 885°C and next cooled to ambient temperature with a various rate from 234°C/s to 1°C/min. To investigate the influence of plastic deformation on a shape of CCT (Continuous Cooling Transformations) diagrams, another part of the specimens were 50% deformed at 885°C or 1100°C and cooled to ambient temperature with a rate from 95°C/s to 1°C/min. The DIL 805A/D dilatometer, with a LVDT-type measuring head, was used to carry out dilatometric test. Findings: Performed dilatometric research revealed that the steel is characterized with Ac3=843°C, Ac1=707°C and a relatively low Ms temperature equal 370°C. Plastic deformation of steel at the temperature of 885°C prior to the start of phase transformations results in distinct acceleration of pearlitic transformation and slight translation of bainitic transformation towards shorter times. Research limitations/implications: Elaborated curves of supercooled austenite transformations of studied steel fully predispose it to production of forgings quenched directly from forging finish temperature and successively subjected to high temperature tempering. Practical implications: The obtained CCT diagrams of supercooled plastically-deformed austenite transformations can be useful in determination of cooling condition of the thermo-mechanical processing for high strength forged machine parts obtained from microalloyed steels. Originality/value: The diagrams of the plastically-deformed supercooled austenite for a new-developed microalloyed steel were obtained.
Rocznik
Strony
78--89
Opis fizyczny
Bibliogr. 23 poz., rys., tab.
Twórcy
autor
  • Division of Constructional and Special Materials, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland, marek.opiela@polsl.pl
autor
  • Institute for Ferrous Metallurgy, ul. K. Miarki 12, 44-100 Gliwice, Poland
autor
  • Division of Constructional and Special Materials, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland
Bibliografia
  • [1] R. Kuziak, T. Bołd, Y. Cheng, Microstructure control of ferrite-pearlite high strength low alloy steels utilizing microalloying additions, Journal of Materials Processing and Technology 53 (1995) 255-262.
  • [2] T. Gladman, The Physical Metallurgy of Microalloyed Steels, The Institute of Materials, London, 1997.
  • [3] M. Jahazi, B. Eghbali, The influence of hot forging conditions on the microstructure and mechanical properties of two microalloyed steels, Journal of Materials Processing and Technology 113 (2001) 594-598.
  • [4] M.J. Balart, C.L. Davis, M. Strangwood, Cleavage initiation in Ti-V-N and V-N microalloyed ferritic-pearlitic forging steels, Materials Science and Engineering A 284 (2000) 1-13.
  • [5] M. Opiela, Hydrogen embrittlement of welded joints for the heat-treatable XABO 960 steel heavy plates, Journal of Achievements in Materials and Manufacturing Engineering 38/1 (2006) 41-48.
  • [6] M. Opiela, Thermo-mechanical treatment of the C-Mn steel with Nb, Ti, V and B microadditions, Archives of Materials Science and Engineering 28/6 (2007) 377-380.
  • [7] J. Adamczyk, Development of the microalloyed constructional steels, Journal of Achievements in Materials and Manufacturing Engineering 14 (2006) 9-20.
  • [8] D. Rasouli, S. Khameneh, A. Akbarzadeh, G.H. Daneshi, Effect of cooling rate on the microstructure and mechanical properties of microalloyed forging steel, Journal of Materials Processing and Technology 206 (2008) 92-98.
  • [9] S. Engineer, B. Huchteman, Proceedings of a Symposium Fundamentals and Applications of Microalloying Forging Steels, Colorado, USA, 1996.
  • [10] J. Adamczyk, Engineering of Metallic Materials, Silesian University of Technology Publishers, Gliwice, 2004 (in Polish).
  • [11] J. Adamczyk, M. Opiela, A. Grajcar, Structure and mechanical properties of forged products from a microalloyed steels manufactured using the thermo-mechanical method, Proceedings of the 11th International Scientific Conference “Achievements in Mechanical and Materials Engineering” AMME’2002, Gliwice - Zakopane, 2002, 7-12 (in Polish).
  • [12] D. Jandowá R. Divišová L. Skálová J. Drnek, Refinement of steel microstructure by free-forging, Journal of Achievements in Materials and Manufacturing Engineering 16 (2006) 17-24.
  • [13] J. Adamczyk, M. Opiela, Engineering of forged products of microalloyed constructional steels, Journal of Achievements in Materials and Manufacturing Engineering 15 (2006) 153-158.
  • [14] W. Ozgowicz, M. Opiela, A. Grajcar, E. Kalinowska-Ozgowicz, W. Krukiewicz, Metallurgical products of microalloy constructional steels, Journal of Achievements in Materials and Manufacturing Engineering 44/1 (2011) 7-34.
  • [15] J. Adamczyk, E. Kalinowska-Ozgowicz, W. Ozgowicz, R. Wusatowski, Interacation of carbonitrides V(C,N) undissolved in austenite on the structure and mechanical properties of microalloyed V-N steels, Journal of Materials Processing and Technology 54 (1995) 23-32.
  • [16] J. Adamczyk, M. Opiela, Influence of the thermo-mechanical treatment parameters on the inhomogeneity of the austenite structure and mechanical properties of the Cr-Mo steel with Nb, Ti, and B microadditions, Journal of Materials Processing and Technology 157 (2004) 456-461.
  • [17] A. Grajcar, M. Opiela, Influence of plastic deformation on CCT-diagrams of low-carbon and medium-carbon TRIP-steels, Journal of Achievements in Materials and Manufacturing Engineering 29/1 (2008) 71-78.
  • [18] A. Grajcar, M. Opiela, Diagrams of supercooled austenite transformations of low-carbon and medium-carbon TRIP-steels, Archives of Materials Science and Engineering 32/1 (2008) 13-16.
  • [19] L. Holappa, V. Ollilainen, W. Kasprzak, The effect of silicon and vanadium alloying on the microstructure of air cooled forged HSLA steels, Journal of Materials Processing and Technology 109 (2001) 78-82.
  • [20] C. Garcia, C. Capdevila, F.G. Caballero, D. San Martin, Effect of molybdenum on continuous cooling transformations in two medium carbon forging steels, Journal of Materials Science 36 (2001) 565-571.
  • [21] D.K. Matlock, G. Krauss, J.G. Speer, Microstructures and properties of direct-cooled microalloy forging steels, Journal of Materials Processing and Technology 117 (2001) 324-328.
  • [22] B. Eghbali, A. Abdollah-Zadeh, Deformation-induced ferrite transformation in a low carbon Nb-Ti microalloyed steel, Materials and Design 28 (2007) 1021-1026.
  • [23] P. Skubisz, H. Adrian, J. Sińczak, Controlled cooling of drop forged microalloyed-steel automotive crankshaft, Archives of Metallurgy and Materials 56/1 (2011) 93-107.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-372f55e1-2002-4d99-8bc9-2f2bec01d79e
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