Effect of Sulfur on Antimony-Induced High-Temperature Ductility Deterioration of C-Mn Steel

The recycling of steel scrap is becoming more and developed to save resources protect the environment. However, impurities such as antimony in cannot be economically effectively removed, resulting an inevitable accumulation impurities. Once impurity concentration exceeds a certain limit, they will have great impact on ductility deterioration hot shortness steel. It has been shown that sulfide can inhibit precipitation residual elements, copper at grain boundaries, effect sulfur thermoplasticity antimony-containing C-Mn 700–1100 °C was examined using Gleeble 1500 thermodynamic simulation device (Gleeble, Poestenkill, NY, USA). Area reduction (RA%) used evaluate thermal ductility. 0.16 mass % Sb extended range ductile grooves, reducing RA% 750–950 °C. Antimony (Sb) found segregate boundaries tested by electron probe microanalyzer. Additionally, scanning microscopy examine fracture morphology, which exhibited characteristics intergranular failure. In contrast, addition compensated for caused Sb.