Development and characterization of 430L matrix composites gradient materials

Abstract

This paper deals with a new concept that is Functionally Gradient Materials (FGM). The materials developed in this work are constituted by a 430L matrix core and composite materials with this matrix and gradient concentration with NbC reinforcement, from the core to the surface, through different steps. Composite powders of different content in NbC were produced through high energy milling in order to obtain the gradient composition. The morphology and microhardness of these powders were characterised and subsequently were processed through conventional P/M techniques, pressing and sintering. The materials obtained show improved wear behaviour

Processing and Characterisation of Functionally Graded Materials Based on Few-Layered Graphene Reinforced Aluminum

“…Vapor deposition, thermal spraying, centrifugal casting, slip casting, tape casting, gel casting, laser deposition, sedimentation, electrochemical methods, and powder metallurgy (P/M) are the production techniques commonly used for FGMs [5,6]. P/M over other techniques, it has some advantages such as availability of good raw material, suitable for mass production, control of chemical composition, production of porous and complex shapes and metal matrix composites, which are very difficult to produce by casting method due to density difference [7]. In the last few years, among metal-based materials, Al, due to their good thermal and electrical conductivity, high tensile strength-to-weight ratio, high hardness, and ductility properties; is of great interest in structural and functional applications [8,9].…”