Effect of Microalloying Elements on Microstructure and Mechanical Properties of Normalized Cast Steel
Abstract
Steel has the advantage of the best eco engineering material as well as economical and hence investigated. In this work microalloying elements like vanadium, niobium and titanium were added to the cast steel and the effect of these microalloying elements on hardness, ultimate tensile strength, room temperature impact strength, percentage elongation and microstructure, were studied. The alloys were melted in induction furnace and y block castings were poured for testing of the material. Various combinations of these alloys at micro level were added with the standard cast steel grades. The properties and micro structures were analyzed for these combinations. The results show that the addition of these elements in the cast steel in normalized form increases the hardness to 200HV and tensile strength to 780MPa, while decreases the percentage elongation to 14% and room temperature impact energy to 14 Joules respectively . This method of alloying refines the microstructure of the cast steel.