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以Al镇静钢中非金属夹杂物为研究对象,比较用金相法和提取法观察夹杂物二维和三维形态的不同及其优缺点。研究表明:采用以甲醇为主要溶剂的有机溶液体系提取钢中夹杂物,可得到完整三维形貌的团簇Al2O3;与传统金相法相比,可以无损伤提取并得到夹杂物完整三维形貌、结构和外部成分,对于有效控制夹杂物的形貌和成分进而去除有害非金属夹杂物有重要参考价值,但提取法无法得到夹杂物内部的信息;金相法可以弥补提取法的部分不足,通过金相法观察钢中非金属夹杂物可以得到夹杂物某一截面的内部信息,对于判断夹杂物形成及转变过程具有很重要作用,因此合理结合两种夹杂物分析方法可以有效地得到夹杂物的多方面信息,对有效控制夹杂物提供理论和实践基础。
Taking Al non-metallic inclusions in Al-killed steel as the research object, the difference between two-dimensional and three-dimensional inclusions and their advantages and disadvantages were observed by metallographic method and extraction method. The results show that: the use of methanol as the main solvent of the organic solvent system to extract inclusions in steel can be obtained complete three-dimensional morphology of clusters Al2O3; Compared with the traditional metallographic method, can be extracted without damage and get the complete three-dimensional morphology of inclusions, Structure and external components have important reference value for effectively controlling the morphology and composition of inclusions and removing harmful non-metallic inclusions. However, the extraction method can not obtain the internal information of inclusions. The metallographic method can make up for the deficiency of the extraction method and can be observed by the metallographic method Non-metallic inclusions in steel can get the internal information of a section of inclusions, which plays an important role in judging the formation and transformation of inclusions. Therefore, combining the two kinds of inclusions reasonably can effectively obtain many aspects of inclusions, The effective control of inclusions to provide theoretical and practical basis.