稀土处理铝脱氧钢的研究进展  

Research progress of rare earth treatment of Al-killed steel

作　　者：张妮 孙亮[2] 于会香[1] ZHANG Ni;SUN Liang;YU Huixiang(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Technology Center,Beijing Shougang Co.,Ltd.,Tangshan 064404,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]北京首钢股份有限公司技术中心,河北唐山064404

出　　处：《炼钢》2024年第6期1-12,共12页Steelmaking

摘　　要：在钢中添加稀土能改善钢材的洁净度并提高钢材性能。综述了近些年稀土处理铝脱氧钢的研究进展。概述了含稀土钢的发展历史与现状,归纳总结了稀土加入钢液后,对钢液洁净度、夹杂物改性、显微组织与力学性能、耐腐蚀性与耐氧化性四个方面的影响。其中重点阐述了稀土处理对钢中夹杂物的影响,包括夹杂物的改性机理、演变规律、尺寸、密度及分布状况等方面。此外,从电渣重熔和渣-钢反应两方面介绍了稀土渣的相关研究。最后对所述内容进行了总结与展望,以期为稀土处理钢的相关研究和应用提供一些参考。The addition of rare earth to steel can improve its cleanliness and properties.The research progress of rare earth treatment in Al-killed steel was reviewed.The development and current status of rare earth-containing steel was outlined firstly.Then the effects of adding rare earth to molten steel were summarized on steel cleanliness,inclusion modification,microstructure and mechanical properties,as well as corrosion and oxidation resistance.Among them,the influence of rare earth treatment on inclusions in steel was described in detail including their modification mechanism,evolution,size,density and distribution characteristics,etc.In addition,researches on slag bearing rare earth were introduced including its application in electroslag remelting as well as slag-steel reaction in secondary refining.Finally,a summary and suggestions were provided to offer references for future research and application of rare earth-treated steel.

关 键 词：铝脱氧钢 稀土处理 夹杂物 组织与性能 稀土渣 

分 类 号：TF76[冶金工程—钢铁冶金]