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Abstract

The main microstructure of the crackable C70S6 steel is pearlite (%90 of the structure is about pearlite). Changing the microstructure by various heat treatment applications such as hardening&quenching, annealing, tempering can be economic and technologic alternatives to the use of crackable C70S6 steel. In this study, the microstructure and the metallography of the crackable C70S6 steel is examined by various heat treatment applications. Besides this, some fracture experiments has been carried out for each heat treatment application. Finally, it has been seen that tempered martensite structure can be an important alternative to the pearlitic crackable C70S6 connecting rods.