含钛耐候建筑钢的耐腐蚀和耐磨损性能研究  

Study on the properties of titanium bearing weather-proof building steel

作　　者：李智 韩光 陆向辉 孙迎兵 Li Zhi;Han Guang;Lu Xianghui;Sun Yingbing(Hebei Construction Material Vocational and Technical College,Qinhuangdao 066000,Hebei,China;Yanshan University,Qinhuangdao 066000,Hebei,China)

机构地区：[1]河北建材职业技术学院,河北秦皇岛066000 [2]燕山大学机械工程学院,河北秦皇岛066000

出　　处：《钢铁钒钛》2021年第2期60-65,共6页Iron Steel Vanadium Titanium

基　　金：河北省教育厅青年基金项目(QN2019065)。

摘　　要：研究了耐候建筑钢Q235NH中添加不同含量Ti后试样的显微组织、耐腐蚀性能和耐磨损性能。结果表明:随钛含量逐渐增加,试样的腐蚀电位先正移后负移、磨损体积表现为先减后增,试样的耐腐蚀性能和耐磨损性能均先提高后下降。随Ti含量从0增至0.09%,试样组织逐渐细化;当Ti含量从0.09%增至0.15%,试样组织未发生明显细化,但内部氮化物颗粒显著粗化。与未添加Ti相比,试样的腐蚀电位正移78 mV、磨损体积减小7.2×10^(-3) mm^(3)。基于改善耐腐蚀性能和耐磨损性能出发,Q235NH耐候建筑钢中合金元素Ti的含量优选为0.09%。In this paper,the corrosion resistance and wear resistance of Q235NH building steel specimens with different Ti content were studied.The results show that with the increase of titanium content,the corrosion potential of the sample first moves forward and then moves negative,and the wear volume first decreases and then increases.Both of the corrosion resistance and wear resistance of the sample present a increase followed by decrease.With the Ti content increasing from 0 to 0.09%,the microstructure of the sample is gradually refined.When Ti content increases from 0.09%to 0.15%,the microstructure of the sample is not refined,but the internal nitride particles are coarsened.The corrosion potential of the sample positively shifts by 78 mV and the wear volume decreases by 7.2×10^(-3) mm^(3),compared with that without Ti.Based on the improvement of corrosion resistance and wear resistance,the optimum content of Ti in Q235 NH weather-proof building steel is at 0.09%.

关 键 词：耐候建筑钢 Q235NH 钛含量 耐腐蚀性能 耐磨损性能 

分 类 号：TF76[冶金工程—钢铁冶金] TG178[金属学及工艺—金属表面处理]