60Si_2 MnRE钢中夹杂物、微观组织和本质晶粒度的研究  

The Study of the Occluded Foreign Substance,Microscopic Structure and Grain Fineness Number in Substance of the 60Si_2MnRE Steel

作　　者：周庆华[1] 王萍辉[1] 史向华[1] 刘小兵[1] 

机构地区：[1]长沙电力学院物理与信息工程系,湖南长沙410077

出　　处：《长沙水电师院学报（自然科学版）》2001年第2期77-80,共4页

摘　　要：采用金相和电子探针等实验方法 ,研究了 6 0Si2 Mn钢和添加稀土后的 6 0Si2 MnRE钢的夹杂物、微观组织和本质晶粒度 .发现稀土加入钢中不仅能脱硫 ,而且能显著改变硫化物夹杂的形态与分布 ,从而有利于提高钢的韧性 .The occluded foreign substance,microscopic structure and grain fineness number in substance of the 60Si 2Mn steel and 60Si 2MnRE steel added rave earth is studied by modem experimental technique of metallic phase and electronic probe.The research result shows that adding rave earth to steel can not only desulfurize the steel,but also can remarkably change the conformation and distributing of sulfid of occluded foreign substance,and so it is benefit to improve the toughness of steel.

关 键 词：夹杂物 微观组织 本质晶粒度 弹簧钢 60Si2MnRE钢 

分 类 号：TG142.41[一般工业技术—材料科学与工程]