Abstract
Abstract Austempered ductile iron (ADI) has complex microstructure containing a multiphase matrix called "austferite". The corrosion resistance of ADI is related to its microstructure which is determined by heat treatment parameters (austempering temperature, austempering time, austenitizing temperature and austenitizingtime). In this work, the electrochemical behavior and corrosion resistance of ADI have been investigated by electrochemical and non- electrochemical tests in chloride media. Particular attention has been paid to the influence of austenitization time (30,60,120,180,360 and 390) on the microstructure and their influence on ADI corrosion behavior. It has been shown that ADI austenitization at 850⁰C for different times and austempered at 360