Sliding Wear Behavior of Compacted Graphite Iron Cylinder Liner Material

Cylinder liner and piston ring materials play an important role in the tribological performance of engines. It is possible to reduce friction and wear of cylinder liner and piston ring by using wear resistant material. Compacted graphite iron finds increasing application as a liner material because of its high strength and good wear resistance. In this work, wear performance of two different grades of compacted graphite iron has been compared with that of gray cast iron liner material. Wear characteristics were evaluated using cylindrical specimens in a pin on disc sliding apparatus. High strength compacted graphite iron grade is found to have the best wear resistance among the three materials evaluated in this study. Increased volume fraction of pearlite enhances the wear resistance of high strength compacted graphite iron grade.