Abstract
Particulate metal matrix composites (PMMC’s) are a category of engineering materials with growing applications in modern industry. Conventional machining processes are used to fabricate engineering PMMC’s components. This article presents a preliminary experimental study based on Merchant theory for PMMC’s (aluminium alloy reinforced with 20% of particulate silicon carbide-SiC). The experiments were carried out on PMMC’s special workpieces using cemented carbides K20 cutting tools in radial turning. The objective of this study is to evaluate the chip compression ratio ( R c), shear angle ( Φ), shear strain ( ε), shear strain rate (d ε/d t), normal stress ( σ) and shear stress ( τ), under prefixed cutting parameters (cutting velocity and feed rate).
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