通信塔用稀土耐蚀普碳钢Q235BRE性能研究  

STUDY ON PERFORMANCE OF RARE EARTH CORROSION RESISTANT CARBON STEEL Q235BRE FOR COMMUNICATION TOWER

作　　者：范增为 廉心桐 陈龙[1] 董逸驰 徐德祥 韦习成[1,2] 董瀚[1,2,3] Fan Zengwei;Lian Xintong;Chen Long;Dong Yichi;Xu Dexiang;Wei Xicheng;Dong Han(School of Materials Science and Engineering,Shanghai University,Shanghai 200444;Shanghai University(Zhejiang)High-end Equipment Basic Parts Material Research Institute,Jiashan 314113,Zhejiang;Shanghai University New Materials(Taizhou)Research Institute Co.,Ltd.,Taizhou 225500,Jiangsu)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]上海大学(浙江)高端装备基础件材料研究院,浙江嘉善314113 [3]上大新材料(泰州)研究院有限公司,江苏泰州225500

出　　处：《河北冶金》2022年第6期23-27,共5页Hebei Metallurgy

摘　　要：根据通信塔对耐腐蚀性能的要求,将稀土耐蚀普碳钢应用在通信塔上,并对经过稀土合金化后的Q235BRE进行了组织性能分析。结果显示,稀土合金化后,Q235BRE组织由珠光体和铁素体组成,晶粒等级略有细化,夹杂物变性为复合稀土的夹杂物,尺寸2~3μm;拉伸性能与耐候结构钢相当,低温冲击性能显著提高;随着稀土含量的增加,稳定的α-FeOOH含量逐渐增加,Fe_(3)O_(4)/γ-Fe_(2)O_(3)和γ-FeOOH的含量有所下降,促进了耐腐蚀性能的提升。According to the requirements of corrosion resistance of communication tower,rare earth corrosion resistant common carbon steel was applied to communication tower,and the microstructure and properties of Q235BRE after rare earth alloying were analyzed.The results show that the structure of Q235BRE is composed of pearlite and ferrite,and the grain grade is slightly refined.The inclusions are modified into composite rare earth inclusions with the size of 2~3μm.The tensile properties are similar to those of weather-resistant structural steels,and the low temperature impact properties are significantly improved.With the increase of rare earth content,the stableα-FeOOH content gradually increased,Fe_(3)O_(4)/γ-Fe_(2)O_(3) andγ-FeOOH content decreased,which promotes the improvement of corrosion resistance.

关 键 词：通信塔 稀土 普碳钢 耐腐蚀性 夹杂物 拉伸性 冲击性 

分 类 号：TG142.1[一般工业技术—材料科学与工程]