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Purpose: The aim of the paper is to determine the influence of hot deformation conditions on hot ductility and ó-ĺ curves of C-Mn-B steel. Design/methodology/approach: The force – energetic parameters of hot – working were determined in hot tensile tests performed in a temperature range of 700 to 1200°C by the use of Gleeble 3800 thermo – mechanical simulator with strain rate 0.01 s-1 and 6.5 s-1...
Purpose: Investigations of microstructure after hot deformation was presented in this work. The non-metallic inclusion influence on the microstructure and type of crack mechanism was shown. The hot ductility investigations were carried out on the low carbon-manganese steel with addition of boron. Design/methodology/approach: The ductility of the steel was measured by reduction of area during the extension...
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