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Title: Processing of advanced Al/SiC particulate metal matrix composites under intensive shearing – A novel rheo process
Authors: Tzamtzis, S
Barekar, NS
Hari Babu, N
Patel, J
Dhindaw, BK
Fan, Z
Keywords: Metal matrix composites; Mechanical properties; Intensive shearing; Particle distribution
Issue Date: 2008
Publisher: Elsevier
Citation: Composites Part A: Applied Science & Manufacturing. In press
Abstract: Particulate Metal Matrix Composites (PMMCs) have attracted interest for application in numerous fields. The current processing methods often produce agglomerated particles in the ductile matrix and as a result these composites exhibit extremely low ductility. The key idea to solve the current problem is to adopt a novel Rheo-process allowing the application of sufficient shear stress () on particulate clusters embedded in liquid metal to overcome the average cohesive force or the tensile strength of the cluster. In this study, cast A356/SiCp composites were produced using a conventional stir casting technique and a novel Rheo-process. The microstructure and properties were evaluated. The adopted Rheo-process significantly improved the distribution of the reinforcement in the matrix. A good combination of improved Ultimate Tensile Strength (UTS) and tensile elongation (ε) is obtained.
Appears in Collections:Materials Engineering
Brunel Centre for Advanced Solidification Technology (BCAST)

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