Influence of Additions of Titanium and Boron on the Structural Evolution of the As-Cast State of 27Cr High Chromium White Cast Iron
AbstractFeTi and FeB particulates having 150 µm were inoculated to molten 27Cr high chromium white cast iron as 0.5 wt.% and over 50 °C above the melting temperature. Samples were analyzed using optical microscopy and XRD to examine the influence of the addition of titanium and boron. The effect of inoculant on the size and carbide volume fraction were determined. The microstructures of the samples were examined by matrixstructure of austenitic and M7C3 carbides with austenite layer surrounding the carbides. From the heat treatment results, it can be say that the size of the austenite reduced, and the decomposition of the austenite resolved M7C3 carbides.