镁和镁钙处理对非调质钢中硫化物形态的影响

来源期刊：钢铁2011年第4期

论文作者：肖国华 董瀚 王毛球 惠卫军

文章页码：65 - 69

关键词：非调质钢； 镁钙处理； 硫化物

Key words：non-quenched and tempered steel； magnesium calcium-treatment； sulfide

摘    要：采用定量金相和能谱仪等手段,研究了镁处理和镁钙复合处理对38MnS6非调质钢中硫化物的形态、尺寸和分布的影响。结果表明:变质处理使铸态硫化物由Ⅱ类向Ⅲ类和Ⅰ类转变,改善了硫化物的分布,但尺寸有所增大。热变形时硫化物的变形度,随硫化物中变质元素含量的降低或硫化物尺寸的增加而增加。镁钙复合处理改善硫化物分布的效果较好。

Abstract: Effect of magnesium calcium treatment on morphology,size and distribution of sulfides in non-quenched and tempered 38MnS6 steel was investigated based on quantitative metallography and electron spectroscopy analysis.The results suggest that typeⅡ sulfide is replaced by type Ⅲ and typeⅠby treatment,and the distributions of sulfides become more uniform though the sizes are bigger.The hot deformability of sulfide increases with the decrease of content of modification agent in sulfides or with the increase of the size of sulfides.An improved dispersion of sulfides can be achieved by combined magnesium and calcium treatment.