Non-metallic inclusions in steels are harmful for steel properties and measuring them is of large importance. Observation in a cross-section of steels has been used as a conventional way for inclusion measurement, however, it has lack of accuracy and spatial distribution of inclusions cannot be seen directly. In this study, 3-dimensional visualization was realized by using multi-sectioning way and composing 2D inclusion distribution images to 3D. A steel sample with aluminum oxide inclusions and a sample with titanium oxide inclusions were measured by the new way and the advantages of the way were discussed. Finally, the difference in inclusion distribution between both samples and its reason were considered.
2017 The Iron and Steel Institute of