Modification de la morphologie du graphite pour l'amélioration de la durée de vie des disques de frein poids lourd

摘要

The truck brake disc lifespan can be limited by a premature failure induced by the thermo mechanical solicitations occurring during braking. This study proposes a solution by a material approach consisting in the modification of the graphite morphology. The behavior of evolved materials is tested under braking and thermal fatigue solicitations with comparison to an grey cast iron used in service.