A COMPARATIVE INVESTIGATION ON THE WEAR PERFORMANCE OF COMPACTED GRAPHITE IRON (CGI) TREATED WITH SINGLE AND DOUBLE TEMPERING

Compacted graphite iron (CGI) is a critical material in today's automotive and manufacturing industries. Heat treatment processes can improve CGI wear properties, related primarily to microstructural changes. In this study, single double tempering heat treatments were used the properties of CGI. Oil quenching was performed after 90 minutes austenitization at 900°C, followed by 60 three different temperatures (315, 350, 375°C). The performance samples compared using pin-on disc test hardness measurements. volume loss friction coefficient evaluated, maps constructed determine samples' behavior. SEM EDS analyses carried out worn surfaces interpret relationship between mechanism microstructure. According study's findings, may optimize better than traditional tempering, structures with high toughness-wear resistance combinations be obtained.