Modelling and process optimisation for heavy plate rolling of structural steel
Tadeusz Siwecki
Corrosion & Metal Research Institute, KIMAB,Drottning Kristinas väg 48, 114 28 Stockholm, Sweden.
DOI:
https://doi.org/10.7494/cmms.2007.1.0116
Abstract:
The aim of the paper is to present the recent developments (in Sweden) regarding microstructure and mechanical property enhancement through thermo-mechanical controlled processing (TMCP) of structural steel plate and the use of predictive models. Simulation of the TMCP treatment in laboratory scale as well as the computer models for calculation of microstructure development and precipitate evolution during hot rolling are invaluable for design of rolling schedules. A brief survey is made of the models developed at the Corrosion & Metals Research Institute and used by the Swedish Steel Industry. The models can be used for predictions of recrystallization and grain growth of austenite after deformation, precipitation or dissolution of microalloying carbo-nitrides in austenite and phase transformation behaviour during accelerated cooling. The effect of TMCP- parameters, low reheating and high finish rolling temperature, as well as rolling schedules, cooling rate will be discussed with regard to the transformation characteristics as well as the microstructure and strength of structure steels.
Cite as:
Siwecki, T., (2007). Modelling and process optimisation for heavy plate rolling of structural steel. Computer Methods in Materials Science, 7(1), 29 – 35. https://doi.org/10.7494/cmms.2007.1.0116
Article (PDF):
Keywords:
HSLA steel, Modelling, Microstructure, Grain size, Recrystallization, Transformation, Precipitation, Microalloying, Mechanical properties, Hot rolling, Accelerated cooling
References:
Sellars, C.M., Whiteman, J.A., 1979, Recrystallisation and Grain Growth in Hot Rolling, Met. Sci., 13, 187-194.
Siwecki, T., 1992, Modelling of Microstructure Evolution during Recrystallization Controlled Rolling", ISIJ Int., 32, 368-376.
Siwecki, T., Engberg, G., 1997, Recrystallization Controlled Rolling of Steel, in Thermo-Mechanical Processing -in Theory, Modelling & Practice, eds, Hutchinson, B., Andersson M., Engberg G., Karlsson B., Siwecki T., Stockholm, 1996, ASM Intern., 121-144.
Siwecki, T., Pettersson, S., Engberg, G., 2000, Models for Prediction of HSLA Steel Behaviour During Thermal and Thermo-Mechanical Processing, in THERMEC 2000 and in Swedish Institute for Metals Research, Report IM2000-729.
Howe, A.A. Parker, S.V., Whittaker, N.A., Di Nunzio, P.E., Lopez, B., et al. 2002, Improved microstructural modelling of phase transformations in medium and high carbon steels, ECSC Contract 7210-PR/034 (D3.02/97), Final Report EUR 20216 EN.
Siwecki, T., Wang, O., 2003, Microstructure evolution during energy saving heavy plate RCR rolling of Ti-V microalloyed steel, Swedish Inst. Metals Research, Report IM2003-565.
Wang, X., Siwecki, T., Engberg, G., 2003, Physical Model for Prediction of Microstructure Evolution during Thermo Mechanical Processing, THERMEC 2003, ed. T. Chandra, Trans Tech Publications, Switzerland, Materials Science Forum, 426-432, 3801-3806.
Sellars, C.M., Palmiere, E.J., 2005, Modelling strain induced precipitation of Nb carbonitride during multipass deformation of austenite, Materials Science Forum, 500-501, 3-14.