Consolidation behaviour of particle reinforced aluminium-matrix powders with up to 50 vol.% SiCp

Abstract. Aluminium-matrix composites (AMC) are produced in order to improve specific properties (e.g. mechanical, thermal or tribological) of the matrix alloy using discontinuous reinforcements like fibres particles. If functional requirements application components such as brake discs have be met, reinforcement contents more than 35 % may required. Therefore, a new manufacturing route is currently being investigated at Institute for Metal Forming Technology (IFU) University Stuttgart, combining powder pressing with subsequent semi-solid forming obtain near-net-shape components. A key challenge this process includes compacting green bodies. In contribution, therefore, AlSi7Mg0.6 and SiCp powders up 50 vol.% gain deeper understanding behaviour particularly high contents. During investigations, homogenously mixed were consolidated cylindrical body by uniaxial determine compressibility different AMC mixtures. At first, influence consolidation pressure onto reached density was analysed, resulting curves well limits amounts Subsequently, particle size achieved could identified. Furthermore, tool wear due abrasive quantified paper.