摘要:
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。
Abstract:
By taking non-metallic inclusions in aluminum killed steel as object of study,the advantages and disadvantages of metallography method and extraction method are comparatively used to observe the differences of the inclusions’two-dimensional and three-dimensional morphologies.As inclusions in the steel are extracted by organic solution（methanol as major dissolvent）,three-dimensional characteristics of clustering Al2O3 can be observed clearly.Compared with traditional metallography method,extraction method can extract the entire inclusions and perfectly observe the three-dimensional morphology,structure and external composition of the inclusions,which are valuable for effectively controlling inclusion morphologies and compositions and removing harmful inclusions.However,inner morphologies of inclusions can’t be observed by this method.On the contrary,by the metallography method,certain crosssections of inclusions can be observed with SEM,which is important for concluding the formation and transformation processes of inclusions.To sum up,reasonable integration of the two methods helps to obtain more detailed information about inclusions in steel,which can provide theoretical principles for controlling inclusions more effectively.
点击查看大图
下载:
