不同卷取温度低碳钢性能及硫化物析出的研究  

Property and Sulfide Precipitation of Different Coiling Temperature in Low Carbon Steels

作　　者：王岩[1] 赵爱民[1] 陈银莉[1] 左碧强[1] 薛俊平[2] 

机构地区：[1]北京科技大学冶金工程研究院,北京100083 [2]首钢技术研究院,北京100041

出　　处：《钢铁》2011年第1期60-65,共6页Iron and Steel

基　　金："十一五"国家科技支撑计划资助项目(2006BAE03A06)

摘　　要：运用拉伸、金相、析出物定量分析、SEM、TEM和EDS等测试方法,对不同卷取温度低碳钢组织性能及硫化物析出进行研究。结果表明：随着卷取温度的升高,钢的强度和晶粒度等级下降。MnS析出主要分2个阶段：第1阶段主要为奥氏体区MnS和Al2O3的复合析出,析出尺寸普遍介于1~5μm之间,形状为条片状;第2阶段为MnS在卷取过程中析出,尺寸普遍介于200~600 nm之间,形状为近球形。卷取温度的变化对化合硫含量以及MnS析出尺寸分布范围影响较小。The property and sulfide precipitation of different coiling temperature in low carbon steels were investigated by using tensile,metallographic,quantitative analysis of precipitates,SEM,TEM and EDS.The results show that： with the coiling temperature increasing,the strength and ASTM reduces gradually.The MnS precipitation is mainly divided two stages： the one stage is the complex precipitation of MnS and Al2O3 in austenite,the precipitate sizes are situated between 1-5 μm and have the lath shape in generally;the two stage is the MnS precipitated in coiling process,the precipitate sizes are situated between 200-60 0 nm and have the near globe shape;the coiling temperature＇s change have small influence to the combination S content as well as the MnS precipitates size distribution.

关 键 词：卷取温度 MNS 析出 SPHC 

分 类 号：TG142.1[一般工业技术—材料科学与工程]