Mechanical and tribological behaviour of aluminium based functionally graded materials: A review

The demand for advanced engineering materials led to the development of functionally graded materials (FGMs) that can operate under a coarse environment with longer service life. In FGMs, the formation of compositional gradient allows for the stacking variation in properties which paves the way for the use in different engineering applications. Compared to the conventional composites, FGMs offers better alternative due to their superior mechanical and tribological properties. Aluminium being a light weight material, has attracted the attention of scientific community towards the development of Al based FGMs with the incorporation of various reinforcements processed through different manufacturing techniques. This paper presents the effect of reinforcements on mechanical and tribological behaviour of Al based FGMs to provide insights to the readers about ongoing research work by including the contributions made in the present area of interest.