Inclusion Size Distributions After Calcium Addition in LCAK Steels
(Room 209C)
09 May 17
11:30 AM
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12:00 PM
Tracks:
Inclusion Analysis
This paper assesses whether there is a significant change in size and/or distribution of liquid inclusions formed after Ca treatment in LCAK steels. One steel sample was taken after Al addition and six after calcium injection. After Ca treatment, solid spinels were successfully modified into liquid calcium aluminates, and their changes in size were measured using SEM-based automated feature analysis. It was observed that the liquid calcium aluminates studied showed a slow but significant increase in size over time. Besides the agglomeration of the liquid calcium aluminates, a drop of 2.5 times in size from the pretreated spinels and the first Ca-treated sample was observed, indicating other phenomena beyond the chemical reaction in the system.