Développement des composants automobiles localement renforcés avec des inserts de composite à matrice métallique

Metal Matrix Composites (MMC) based on aluminium alloys are currently one of the most interesting alternatives, due to their high performance level, for different commercial applications. The main objective of this work is the development of locally reinforced automotive components where the MMC insert is located in the areas where the level of performance needed is higher thon that offered by conventional materials. In this way, the production of competitive products with a high performance level will be possible in which only concrete areas, mainly those in need of a high wear resistance, of the part are reinforced. Two conventional foundry technologies have been previously selected (High Pressure Die Casting and Low Pressure Casting), that are known to be largely competitive. Likewise, two different kinds of MMC inserts have been initially considered, inserts mode of Al/SiC p commercial MMCs and inserts made of porous preforms, for the fabrication of two different automotive components: a clutch disc and a ventilated brake disc.