卷取温度对低碳钢组织性能及AlN析出行为的影响  

Effect of coiling temperature on the AlN precipitation,microstructure and mechanical properties of low carbon steel

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：《北京科技大学学报》2010年第6期748-752,791,共6页Journal of University of Science and Technology Beijing

基　　金："十一五"国家科技支撑计划资助项目(No.2006BAE03A06)

摘　　要：运用拉伸、金相、析出物定量分析、TEM和EDS等测试方法,对不同卷取温度低碳钢组织性能及析出进行研究.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,固溶的N含量逐渐降低,740℃卷取时固溶的N含量几乎为零.热力学和动力学分析表明,AlN主要是在卷取过程中产生的.透射电镜观察到的AlN尺寸在10～50nm,并且具有复杂的化学成分.The precipitation,microstructure and mechanical properties of low carbon steel at different coiling temperatures were investigated by tensile testing,metallography,quantitative analysis of precipitates,TEM and EDS.The results show that with the coiling temperature increasing,the strength and grain size grade of the steel and the content of nitrogen in solution decrease gradually;at a coiling temperature of 740℃,the content of nitrogen in solution is almost zero.Thermodynamic and kinetic analyses indicate that AlN precipitates in coiling chiefly.The sizes of AlN,with complex chemical composition,are between 10nm and 50nm.

关 键 词：低碳钢 卷取温度 ALN 析出 

分 类 号：TG335.3[金属学及工艺—金属压力加工]