Mn-Si-Ti-Mg复合脱氧对钢中氧化物夹杂的影响  

Influence of Mn-Si-Ti-Mg Complex Deoxidation on the Oxide Inclusions of Steel

作　　者：杨飞[1] 李光强[1] 宋宇[1] 

机构地区：[1]武汉科技大学钢铁冶金及资源环境利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《钢铁钒钛》2011年第1期71-78,共8页Iron Steel Vanadium Titanium

摘　　要：从氧化物冶金观点出发,研究了Mn-Si-Ti-Mg复合脱氧对钢中氧化物夹杂的影响。利用扫描电镜和Qwin图像分析软件,观察和分析了各种复合脱氧条件下钢中夹杂物的形貌、组成以及粒度分布,并研究了Ti、Mg含量变化对夹杂物的影响。结果表明,Mn对钢中夹杂物的形态和尺寸起到了重要作用;在w[Ti]>0.138%时,Mg含量的增加能有效改变钢中夹杂物的类型与大小;钢中夹杂物粒度主要分布在0.5～1.0μm。From the viewpoint of oxide metallurgy,influence of Mn-Si-Ti-Mg complex deoxidation on the oxide inclusions of steel was studied.SEM and Qwin image analysis software were used to investigate the morphology,chemical compositions and size distribution of inclusions in steel in each complex deoxidation condition.The effects of Ti and Mg contents on inclusions were investigated.The results showed that Mn plays a vital role in the morphology and size of inclusions in the steel;when Ti content more than 0.138%,the increase of Mg content can effectively change the type and size of oxide inclusions in steel,and the size of oxide inclusions is mainly in the range of 0.5～1.0 μm.

关 键 词：氧化物冶金 Mn-Si-Ti-Mg复合脱氧 夹杂物 粒度分布 

分 类 号：TF704.1[冶金工程—钢铁冶金]