建筑抗震钢筋的合金化与组织性能研究  

Study on Alloying and Microstructure Properties of Building Seismic Reinforcement

作　　者：于文静[1] YU Wenjing(School of Civil Engineering,Anhui Water Conservancy Technical College,Hefei 230000,China)

机构地区：[1]安徽水利水电职业技术学院建筑工程学院,安徽合肥230000

出　　处：《太原学院学报（自然科学版）》2023年第3期36-40,共5页Journal of TaiYuan University:Natural Science Edition

基　　金：安徽省2020年度高校科学研究项目(KJ2020A1050)。

摘　　要：采用连铸连轧的方法制备了两种不同组分的抗震钢筋,研究了稀土La+Ce对建筑抗震钢筋显微组织、拉伸性能和冲击性能的影响。结果表明,未添加稀土和添加稀土抗震钢筋的金相组织都为铁素体(F)和珠光体(P),但是添加稀土抗震钢筋中珠光体数量增多、尺寸减小,铁素体也发生了明显细化;添加稀土后抗震钢筋的平均晶粒尺寸和珠光体片层间距都相对未添加稀土的抗震钢筋减小7.41%和26.26%;相较于未添加稀土抗震钢筋,添加稀土后抗震钢筋的屈服强度和抗拉强度分别增大30 MPa和25 MPa,断后伸长率和最大拉力下总伸长率基本不变,满足规范要求;添加稀土抗震钢筋的-40℃和-60℃冲击功分别相较未添加稀土抗震钢筋提高了41.12%和42.03%。添加稀土有助于提升建筑抗震钢筋的拉伸力学性能和低温冲击性能。Two kinds of different components were prepared by continuous casting and rolling,and the effects of rare earth La+Ce on the microstructure,tensile properties and impact properties of building seismic reinforcement were studied.The results show that the metallographic structure of the seismic reinforcement without and with rare earth is ferrite(F)and pearlite(P),but the quantity and size of pearlite in the seismic reinforcement with rare earth(La+Ce)are increased,and that the ferrite is also obviously refined;the average grain size and pearlite lamellar spacing of seismic reinforcement after adding rare earth are 7.41%and 26.26%less than those of seismic reinforcement without adding rare earth.Compared with the seismic reinforcement without rare earth,the yield strength and tensile strength of the seismic reinforcement with rare earth increase by 30 MPa and 25 MPa respectively,and the elongation after fracture and the total elongation under the maximum force remain unchanged or slightly decrease,which meet the requirements of the specification;the impact energy of-40℃and-60℃with the addition of rare earth seismic reinforcement is 41.12%and 42.03%higher than that without the addition of rare earth seismic reinforcement,respectively.The addition of rare earth is helpful to improve the tensile mechanical properties and low-temperature impact properties of building seismic reinforcement.

关 键 词：抗震钢筋 稀土La+Ce 显微组织 拉伸性能 冲击性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]