Effect of coating thickness on the tool wear performance of low stress TiAlN PVD coating during turning of compacted graphite iron (CGI)

Compacted graphite iron (CGI), with its superior mechanical properties, is a promising candidate to replace grey cast iron in the automotive industry. However, the low machinability of CGI compared to grey cast iron, has made this transition difficult. Built-up edge formation, combined with abrasive and adhesive wear is the main problem of CGI turning at moderate cutting speeds. In this study, a low compressive residual stress PVD coating was …