EAF-CSP流程V-N微合金钢中第二相的析出  

Second Phase Analysis of V-N Microalloy Steel Produced by EAF-CSP

作　　者：刘清友[1] 杨小军[1] 毛新平 林振源 张立文[3] 

机构地区：[1]钢铁研究总院结构材料研究所,北京100081 [2]广州珠江钢铁有限公司CSP技术研究所,广东广州510730 [3]大连理工大学材料科学与工程系,辽宁大连116024

出　　处：《钢铁》2007年第4期53-56,共4页Iron and Steel

摘　　要：目前,在EAF-CSP流程中通过V-N微合金化技术可成功生产屈服强度为550 MPa的高强度低合金钢。然而,基于热力学平衡考虑,对铸坯中V(C,N)的析出分析存在争议。针对珠钢CSP流程生产的V-N微合金钢,采用物理化学相分析方法、透射电镜的复型分析以及扫描电镜观察了流程中不同阶段试样的V(C,N)析出情况。并通过Thermo-Calc理论计算,初步探讨了EAF-CSP流程V-N微合金钢中Ti以及Al的析出对V(C,N)析出的影响。The V-N microalloy steel with yield strength of 550 MPa is produced by EAF-CSP route. However, based on the thermodynamics, there are different opinious regarding the analysis of V（C, N） particles in the waterquenched continuously cast slab. The physicochemical phase analysis,SEM and TEM analysis were used to observe the precipitates during EAF-CSP process. The effect of Ti and A1 on the precipitation of V（C,N） is discussed by use of Thermo-Calc software.

关 键 词：EAF-CSP V-N微合金钢 相分析 析出 

分 类 号：TF777[冶金工程—钢铁冶金] TG335[金属学及工艺—金属压力加工]