摘要
Continuous rolling techniques were used in this study to produce steel with a medium level of carbon but a high level of sulfur. Controlled rolling techniques were used to control the shape of sulfide. The effect of sulfide on the microstructure of steel was also investigated in this study. The size and distribution of sulfide are determined through the use of an image analyzer and the statistics of the products ＆ service solution （SPSS） software. A comparison between the microstructures of normalized and quenched steel reveals that sulfide can pin the boundaries of the austenite grain boundary and refine the microstructure of the austenite grain. It also reveals that the size relationship between sulfide and austenite grain satisfies the Zener equation.
Continuous rolling techniques were used in this study to produce steel with a medium level of carbon but a high level of sulfur. Controlled rolling techniques were used to control the shape of sulfide. The effect of sulfide on the microstructure of steel was also investigated in this study. The size and distribution of sulfide are determined through the use of an image analyzer and the statistics of the products ＆ service solution （SPSS） software. A comparison between the microstructures of normalized and quenched steel reveals that sulfide can pin the boundaries of the austenite grain boundary and refine the microstructure of the austenite grain. It also reveals that the size relationship between sulfide and austenite grain satisfies the Zener equation.
基金
funded by the National Science and Technology Research Project 2007BAE51B03
