钢/Ar及钢/渣界面非金属夹杂物碰撞团聚行为原位观察  

In situ observation of collision and agglomeration behavior of non-metallic inclusions at steel/Ar and steel/slag interfaces

作　　者：吴明晖 程礼梅 尹青 吴小林 赵德利 Jumaev Akhmadjon Abduvokhidovich 任英[1] 张立峰 WU Minghui;CHENG Limei;YIN Qing;WU Xiaolin;ZHAO Deli;JUMAEV Akhmadjon Abduvokhidovich;REN Ying;ZHANG Lifeng(School of Metallurgical and Ecological Engineering,Beijing University of Science and Technology,Beijing 100083,China;Pangang Group Research Institute Co.,Ltd.,Chengdu 610031,China;Jiangyin Xingcheng Special Steel Co.,Ltd.,Wuxi 214429,China;China First Heavy Industries Co.,Ltd.,Qiqihar 161042,China;Navoi State University of Mining and Technologies,Navoi 210100,Uzbekistan;School of Mechanical and Materials Engineering,North China University of Technology,Beijing 100144,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]攀钢集团研究院有限公司特钢所,成都610031 [3]江阴兴澄特种钢铁有限公司,无锡214429 [4]中国第一重型机械股份有限公司,齐齐哈尔161042 [5]纳沃伊国立矿业技术大学,纳沃伊210100 [6]北方工业大学机械与材料工程学院,北京100144

出　　处：《工程科学学报》2025年第4期727-738,共12页Chinese Journal of Engineering

基　　金：国家重点研发计划资助项目(2023YFB3709900);国家自然科学基金资助项目(U22A20171);中国宝武低碳冶金创新基金资助项目(BWLCF202315);攀钢-北科大钒钛研究院科研资助项目。

摘　　要：首先介绍了高温共聚焦扫描显微镜(HT-CSLM)的工作原理及主要功能,详细介绍汇总了近年来使用高温共聚焦显微镜对钢中夹杂物团聚的研究进展,包括对钢液表面、钢渣界面及渣表面夹杂物碰撞、团聚、长大的原位观察,动力学研究及模型推导.探讨了当前计算夹杂物之间吸引力的毛细力模型,分析了密度、尺寸、距离等因素对钢中夹杂物团聚碰撞趋势的影响大小,并为后期高温共聚焦显微镜在夹杂物碰撞的研究方向提供思路.The working principle and the main functions of the high-temperature confocal scanning laser microscope(HT-CSLM)are presented.In situ observation of the evolution of high-temperature microstructure of materials can be performed using the HT-CSLM.This is important for studying in detail the processes of material melting,solidification,high-temperature stretching,martensitic transformation,etc.It can also be used in the metallurgical field to study the dissolution,collision,agglomeration,and growth behavior of inclusions.The recent advancements in the aggregation of inclusions using the HT-CSLM are summarized.In-situ observations of collisions,aggregation,and growth of inclusions on the surface of molten steel,slag,and at the steel-slag interface,along with the dynamic studies and model derivations,are included.The collision behavior of non-metallic inclusions at the steel/Ar interface has been analyzed using high-temperature confocal microscopy.This is an important parameter for understanding the collision,agglomeration,and growth behavior of non-metallic inclusions in steel and for exploring the methods to improve steel cleanliness.According to the law of agglomeration of inclusions at the steel/Ar interface,inclusions with similar phases exhibit attraction:the attraction between the solid phases is the strongest,followed by that of the semisolid-semisolid pairs and the liquid-liquid pairs.For inclusions with different states,both attractive and repulsive forces exist simultaneously.The difference between the forces depends on their physical properties,in particular,the contact angle between inclusions and molten steel.Research on the parameters of the capillary force model shows that the effect of the density,size,and contact angle of inclusions is significant on capillary suction,while that of the steel surface tension is relatively weaker.Previous studies have included Al2O_(3),Al2O_(3)-SiO_(2),Al2O_(3)-CaO,MgO,Al2O_(3)-MgO,Al2O_(3)-Ce2O_(3),and Ca-,Si-,and Al-type inclusions in carbon steel.However,there has

关 键 词：高温共聚焦激光扫描显微镜 钢液界面 夹杂物 团聚碰撞 毛细力模型 

分 类 号：TF4[冶金工程—钢铁冶金]