The methods of intensive plastic deformation SPD (Severe Plastic Deformation) belong to a group of very attractive means of increasing utility properties of metallic materials (strength and structural characteristics). The paper is focused on numerical simulation forming of high-carbon steel C55E processed by the SPD DRECE (Dual Rolling Equal Channel Extrusion) and GTAW-141 welding process by Simufact software. Numerical simulation of welding and forming process benefits allows much wider perform verification of the influence of individual technological parameters on the final properties. On the test welds were verified and compared results of numerical simulation. Last but not least, acquired information about the weldability, mechanical properties, structure, distribution of residual stresses allow an effective deployment of given materials in real industrial applications.Keywords: Numerical simulation welding, high-carbon steel, residual stress, severe plastic deformation, Simufact.welding software
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