Effect of Ti and Zr Deoxidation Process on the Inclusions in Low Carbon Steel

摘要

The 35 kg ingot was refined with vacuum induction furnace by means of three various deoxidation processes in laboratory. From the steel-making point of view, effect of deoxidation process on inclusions and was analyzed. The fraction, size and distribution of inclusions were studied with scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) in three various deoxidation processes steel. The results showed that the volume fraction of inclusions was the largest in Ti/Zr deoxidation process and the inclusions distributed uniformly. It was found that the amount of fine inclusions size in the range of 0.5～1.5μm was the largest at Ti/Zr deoxidation process. The fraction of inclusions decreased with holding time increasing during alloying in present study.