连铸连轧10CrNiCu钢板厚度方向元素分布特征分析

采用激光原位分析技术,研究了连铸连轧10CrNiCu钢板中各元素在板厚方向的分布,结果表明:C在钢板下表面含量高,上表面含量低;P、S偏析微区弥散分布;Mn、Ni、Cr、Si基本沿板厚中心对称分布,为中心正偏析,Cu的分布最均匀。元素的偏析度基本与原子半径大小成反比关系,C的偏析度最大,P、S、Si偏析度居中,Mn、Cr、Ni、Cu的偏析度较小。

Analysis of Element Distribution Character in Thickness Direction of Continuously Cast Continuously Rolling 10CrNiCu Steel Plate

The element distribution character in thickness direction of continuously cast continuously rolling 10CrNiCu steel plate was studied by laser in situ analysis technology. The results show that the content of C in lower surface is higher than that of upper surface,the segregation micro zone of P and S scatter finely,Mn,Ni,Cr,Si are central positive segregation and distribute symmetrically along the center line of the steel plate,Cu is well-distributed,the relationship between segregation and radius of element atom is inverse proportional,the segregation of C is most significant,the segregation of P,S,Si are medium,the segregation of Mn,Ni,Cr,Cu are minute.