Tribological behavior of Gr/TC4 matrix composite through selective laser melting

The TC4 and graphene/TC4 composites were prepared by Selective Laser Melt (SLM). The microstructure and tribological behaviors of TC4 and graphene/TC4 composites were studied. The results show that graphene is added to TC4 alloy, part of it reacts with the matrix to generate TiC in situ, and part is converted into graphene film. In the process of friction and wear experiment, TiC is uniformly distributed in the α phase of the matrix, which improves the hardness of the matrix, and the graphene film plays a lubricating role, protects the matrix, and improves the wear resistance of Gr/TC4. The wear mechanism of TC4 is mainly composed of fatigue wear, adhesive wear and abrasive wear, while the wear mechanism of Gr/TC4 composites is mainly composed of adhesive wear and abrasive wear.