Caracterização e propriedades mecânicas dos aços com alto teor de manganês (18-28%p) e carbono (1,1-1,7%p) produzidos em um forno de indução no laboratório de fundição da Universidade Federal do Ceará

Abstract

Alloys with high Mn content can provide an attractive alternative, and its applications in construction, mining, quarrying, oil well drilling. The manganese and carbon are austenite stabilizer of austenitic steel, such alloys have relatively low production costs. With mechanisms appropriate treatments, high Mn content alloys are widely used for combine high strength with excellent ductility. This paper discusses the development of austenitic steel with high content of Mn and C through the casting process. The study aims to evaluate the changes caused by the increase in Mn and C in the molten steel by changing the microstructure and mechanical properties. For this it conducted a comparison between three different alloys varying chemical composition and heat treatment. The samples passed all the conditions by a metallographic preparation. The chemical analysis was obtained using the technique of optical emission spectroscopy (OES). To quantify the precipitates, an analysis of optical microscopy and then the scanning electron microscopy was performed using the secondary electron mode (SE). By using the scanning electron microscope specific analyzes were obtained through the technique of energy dispersive spectrometry (EDS-EDX). Also hardness and microhardness tests were performed.