Abstract
The present technical work reports on the workability performance along with the consolidation behavior of aluminum (Al) and Al–5% silicon carbide (SiC) powder metallurgy composites during cold compaction. An experimental work has been carried out to investigate the powder compaction behavior of Al–SiC metal matrix composites. SiC of particle sizes 120, 75, and 45 μm has been pre-alloyed with Al powders of particle size ranging from −37 to 75 μm. Various particle size additives of SiC have been used as a second-phase particle in this work with the intension of predicting the mechanical and metallurgical properties of the metal matrix composites studied. The pressure applied for the preparation of compacts have been considered as 220–260 kN in order to prepare the samples of heights in the range of 30 to 32 mm, and the diameter of the compacted sample was 26.11 mm. The densification during compaction is measured by means of the presence of voids in the compacts applying the mass constancy principle. The effect of particle size on the metal matrix composites proposed has been completely investigated under two different stress state conditions such as plane and triaxial.
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