Ti微合金化技术在热轧带肋钢筋中的应用  

Application of Ti microalloying technology in hot rolled ribbed steel bars

作　　者：张彦辉 战东平 杨永坤 李阳 康建光 任卓 Zhang Yanhui;Zhan Dongping;Yang Yongkun;Li Yang;Kang Jianguang;Ren Zhuo(Wuxi Xinsanzhou Special Steel Co.,Ltd.,Wuxi 214000,China;School of Metallurgy,Northeastern University,Shenyang 110819,China;Zhangjiagang Jingshi Metallurgy Technology Co.,Ltd.,Zhangjiagang 215623,China)

机构地区：[1]无锡新三洲特钢,无锡214000 [2]东北大学冶金学院,沈阳110819 [3]张家港市京石冶金科技有限公司,张家港215623

出　　处：《材料与冶金学报》2020年第1期51-56,共6页Journal of Materials and Metallurgy

基　　金：国家自然科学基金(51874081).

摘　　要：无锡新三洲特钢有限公司通过实施钛微合金化生产工艺,代替了原有的成本较高的Nb+Ti复合微合金化工艺,充分发挥了Ti的沉淀、析出强化作用。经过Ti微合金化工艺生产的HRB400E热轧带肋钢筋具有良好的微观组织形态,晶粒度达到了11级以上,钢筋力学性能稳定.对于Φ18 mm HRB400E钢筋,Ti微合金化成品屈服强度与Nb+Ti微合金化成品相差不多,抗拉强度明显优于Nb+Ti微合金化成品.Φ18 mm HRB400E钢筋平均屈服强度达到438.5 MPa,平均抗拉强度为613.6 MPa;Φ25 mm HRB400E钢筋平均屈服强度达到455.0 MPa,平均抗拉强度为625.0 MPa.Wuxi Xinsanzhou Special Steel Co.,Ltd.replaced the original Nb-Ti microalloying process of higher cost with Ti microalloying process,fully using its precipitation strengthening effect.The HRB400E hot-rolled ribbed bar with Ti microalloying process has good microstructural morphology,small grain size of 11 grades,and stable mechanical properties.ForΦ18 mm HRB400E steel bar,the yield strength of Ti microalloyed product was very close to that of Nb+Ti microalloyed product.The tensile strength of Ti microalloyed product was obviously better than that of Nb+Ti microalloyed product.The average yield and tensile strength ofΦ18 mm HRB400E steel bar reached 438.5 and 613.6 MPa respectively.The average yield and tensile strength ofΦ25 mm HRB400E steel bar reached 455 and 625 MPa respectively.

关 键 词：钛微合金化 强化作用 HRB400E热轧带肋钢筋 力学性能 

分 类 号：TF704.2[冶金工程—钢铁冶金]