电渣重熔06Cr18Ni11Ti奥氏体不锈钢铝钛烧损热力学分析  

Thermodynamic analysis of aluminum-titanium burning loss for electroslag remelted 06Cr18Ni11Ti austenitic stainless steel

作　　者：安涛 王芳[1,2] 刘中秋 李宝宽 徐鹏飞 岳云辉 AN Tao;WANG Fang;LIU Zhongqiu;LI Baokuan;XU Pengfei;YUE Yunhui(Key Laboratory for Ecological Metallurgy of Multimetallic Mineral Ministry of Education,Northeastern University,Shenyang 110819,Liaoning,China;School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China;Shenyang Neu-sanken Industrial Furnace Mfg.Co.,Ltd.,Shenyang 110100,Liaoning,China)

机构地区：[1]东北大学共生矿生态化冶金教育部重点实验室,辽宁沈阳110819 [2]东北大学冶金学院,辽宁沈阳110819 [3]沈阳东大三建工业炉制造有限公司,辽宁沈阳110100

出　　处：《钢铁研究学报》2024年第11期1399-1408,共10页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(52171031);辽宁省优秀青年基金资助项目(2023JH3/10200001);辽宁省兴辽英才-青年拔尖人才资助项目(XLYC2203064)。

摘　　要：为了研究06Cr18Ni11Ti奥氏体不锈钢电渣重熔过程中关键元素Al和Ti的热力学平衡,建立了基于分子离子共存理论(IMCT)的热力学模型,推导出针对该钢种的无TiO_(2)四元渣系(Al_(2)O_(3)-CaO-MgO-CaF_(2))的IMCT计算公式,并计算了渣系各组元以及钢中初始Al含量对Al、Ti平衡的影响。结果表明:过量的Al_(2)O_(3)会造成Ti元素的烧损;而过量的CaO则会造成Al元素的烧损;CaF_(2)和MgO对Al、Ti平衡影响较小,可以利用其来调节渣系的黏度、熔点及比电阻等物性参数;冶炼温度升高会导致平衡Al含量增加,而平衡Ti含量降低;初始Al含量越高,平衡状态下的Al、Ti含量就越高。To study the thermodynamic equilibrium of the key elements Al and Ti of the 06Cr18Ni11Ti austenitic stainless steel during the electroslag remelting process,a thermodynamic model based on the ion and molecule coexistence theory(IMCT)was established.For the four-component slag(Al_(2)O_(3)-CaO-MgO-CaF_(2))with no TiO_(2),an IMCT formula was developed to calculate the effects of the components of the slag system and the initial Al content in the steel on the equilibrium of Al and Ti.The results indicate that excessive Al_(2)O_(3) can cause the burning loss of Ti element,excessive CaO will lead to the burning loss of Al element.CaF_(2) and MgO in slag,which can be used to adjust the viscosity,melting point,and specific resistance of the slag system,have little impact on the equilibrium of Al and Ti.With the increase in temperature in slag,the content of Al at equilibrium time rises,while the content of Ti drops.When more initial Al content is in steel,the content of Al and Ti in equilibrium state is higher.

关 键 词：奥氏体不锈钢 电渣重熔 分子离子共存理论 铝钛平衡 热力学 

分 类 号：TF744[冶金工程—钢铁冶金]