Experimental study of the nucleation of alumina inclusions in liquid steel

2003 
An experimental setup was constructed to study the nucleation and growth of non-metallic inclusions in liquid steel. The setup allows easy control of the atmosphere in the reaction chamber as well as fast and smooth movement of the sample. A liquid steel sample can be moved smoothly from the reaction chamber to the quenching zone of room temperature in 2 s. The rapid freezing of the sample enables the study of the formation, growth and distribution of the inclusions. A preliminary study on the homogeneous nucleation of alumina was carried out. Experimental evidence of homogeneous nucleation in the region of aluminium supersaturation was found in the sample quenched 5 s after aluminium addition. Fast agglomeration was also observed. In all the samples quenched 15 s or longer after the aluminium addition, agglomerated alumina clusters were found.
    • Correction
    • Source
    • Cite
    • Save
    • Machine Reading By IdeaReader
    4
    References
    11
    Citations
    NaN
    KQI
    []