Theory and Experimental Research on Inclusion Modification in Improved Carbon Structural Steel
By means of the thermodynamics analysis of inclusion modification in the process of calcium treatment, and the advantage area chart of calcium, aluminum, sulfur, oxygen activity in inclusion midification, this paper analyzes the effects of molten steel temperature, aluminum activity, sulfur activity and other factors on inclusion modification. After calcium treatment, inclusions in high-quality carbon steel S48 will become massive or globular calcium aluminate, MnS inclusion and the composite inclusions of MgO·Al2O3 in kernel and CaO·Al2O3 in shell.
Sihai Jiao, Zhengyi Jiang and Jinglong Bu
C. J. Zhang et al., "Theory and Experimental Research on Inclusion Modification in Improved Carbon Structural Steel", Advanced Materials Research, Vols. 146-147, pp. 1659-1666, 2011