Investigation of Microstructure and Mechanical & Electrochemical Behaviors of Martensitic Stainless Steel (MSS) and Alloyed White Cast Iron (WCI) Rolls Fabricated by a Centrifugal Casting

Abstract

The present study focuses on the production of two kinds of composite rolls by the horizontal centrifugal casting process and the investigation of the chemical composition, microstructure, mechanical & electrochemical behaviors of the products. Alloyed white cast iron (WCI) and martensitic stainless steel (MSS) were successfully produced with this method. The chemical compositions of the produced materials were examined by X-Ray Fluorescence Analysis (XRF). The microstructural properties were examined using an optical microscope (OM). These produced rolls are developed for grinding purposes. The rolls used in the grinding process must also have higher hardness values, so Vickers hardness measurements are performed on the WCI and MSS alloys. Moreover, produced rolls intended to work in corrosive working environment as well. Due to these requirements, the corrosion resistance plays important role for these rolls. Corrosion behavior of casted samples were investigated via potentiodynamic polarization measurements.