Wear Behavior Analysis of a AlMg1SiCu Matrix Syntactic Foam Reinforced with Boron Carbide Particles and Recycled Fly Ash Balloons

Metallic foam is a class of composites with homogeneously distributed porosity into its metallic matrix, provided to material properties like low density and high specific strength. A matrix`s incorporation of high hardiness ceramic particles improves the composite wear resistance. Therefore, this work aimed a better understanding of the improved wear behavior, through Pin on Disc experiment, of a AlMg1SiCu foam produced via the stir casting process, reinforced with boron carbide particles and recycled fly ash balloons. The results show a low coefficient of friction (0.08–0.45) due to lubricant effect of fly ash balloon debris and a superior wear resistance with a wear rate varying from 1 to 8.5 (10−13 m3/m) due to the addition of boron carbide particles, allowing this aluminum foam to replace aluminum alloys in parts that are exposed to wear.