5th International High Manganese Steel Conference - HMNS 2022

The aim of the presentation is the explanation and description of structural phenomena occurring in high manganese steels with TWIP effect during dynamic deformation, taking into account the heat generated during the deformation and structure changes depending on the stacking- fault energy (SFE) affected by chemical composition. It has been assumed that the ability to activate specific deformation mechanisms, such as mechanical twinning - TWIP effect - in high manganese steels is determined by the SFE value affected primarily by the chemical composition of steel and the strain rate due to heat generated during deformation. The uniaxial tension tests will be conducted at a rate of 0.001 s-1 ÷ 2500 s-1. Thermocouple and A 2D finite element thermo-mechanical model of uniaxial tensile tests will be developed to determine local strain and increase temperature. Obtained results allow presenting the main deformation mechanism regarding strain rate and chemical composition