Research progress on deformation behavior of inclusions during billet rolling
The strength-toughness,corrosion resistance and service life of steel could be impacted by inclusions.In addition,the inclusions had the potential to cause wear and scratches on rolls during the rolling process.Therefore,it was crucial to examine the inclusions deformation behavior.In order to understand the new progress of inclusions deformation behavior more systematically,the characterization methods,control strategies and deformation affecting factors of the inclusions during the rolling process were briefly described.The analysis of the rolling process of different types of inclusions showed that the control method of MnS focused on reducing the hardness difference between MnS and the steel matrix,and selecting the appropriate rolling deformation process;the composition was mainly focused on being changed as the control method of silicate inclusions;the control of well-modified calcium aluminate inclusions was not only to completely remove large-sized particles,but also to control the size of high-hardness inclusions.This discourse summarized the effects of inclusion hardness,position,deformation capacity and roll diameter on inclusion deformation behavior.Additionally,the key research directions for a comprehensive understanding of this behavior were proposed.
billet rollinginclusion deformationcontrol policyinfluencing factorrelative plasticity index
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