铝对含钛微合金钢成分控制及夹杂物形成的影响  

Effect of aluminum on composition control and inclusion formation of microalloyed steel containing titanium

作　　者：亓伟伟 孙建卫 刘洪银 杨旭 康佳 杨洪波[2] QI Weiwei;SUN Jianwei;LIU Hongyin;YANG Xu;KANG Jia;YANG Hongbo(Technical Center,Laiwu Branch of Shandong Iron&Steel Co.,Ltd.,Jinan 271100,China;School of Metallurgical Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China)

机构地区：[1]山东钢铁股份有限公司莱芜分公司技术中心,山东济南271100 [2]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《物理测试》2022年第4期37-41,共5页Physics Examination and Testing

摘　　要：自主设计了不同Al含量的含钛微合金钢,采用火花源光电直读光谱仪检测了每炉钢的化学成分,分析了Al含量对试验钢中O和Ti含量的影响规律;利用OM、SEM观察了试验钢夹杂物形貌并进行了能谱分析,研究了Al含量对试验钢夹杂物形成的影响规律。研究结果表明:随着Al含量的增加,钢中Ti氧化物夹杂逐渐减少,Ti主要以TiN及TiC的形式存在,收得率得到提高;当Al质量分数大于0.0337%时,Ti的收得率均高于90%;当Al质量分数控制在0.0337%~0.0606%时,脱氧效果较好,并可降低夹杂物数量、减小夹杂物的尺寸。Microalloyed steels containing titanium with different Al contents were designed independently,and the chemical composition of each furnace steel was detected by spark source photoelectric direct reading spectrometer.The influence of Al,O and Ti contents in the tested steel was analyzed.Optical microscope(OM) and scanning electron microscope(SEM) were used to observe the morphology of inclusions,and energy spectrum analysis was carried out to study the influence of Al content on the formation of inclusions.The results show that with the increase of Al content,Ti oxide inclusions in steel gradually decrease.Ti mainly exists in the form of TiN and TiC,and the rendimiento of Ti was increased.When Al content was higher than 0.033 7%,the rendimiento of Ti was higher than 90%.When the Al content was controlled at 0.033 7%-0.060 6%,the de-oxidation effect was good,and the number and size of inclusions were reduced.

关 键 词：铝 钛 氧 含钛微合金钢 夹杂物 收得率 

分 类 号：TG142.33[一般工业技术—材料科学与工程]