Investigation the Machinability of Al/SiC Composite

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Rahiminasab, Jafar | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 39845 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Kouchakzade, Mohammad Ali; Yoosafi, Reza
Abstract:
Metal matrix composites (MMCs) have received considerable attention due to their excellent engineering properties, but their poor machinability has been the main deterrent to their substitution for metal parts. The hardness and abrasive nature of reinforcement phase causes rapid tool wear during machining and, consequently, high machining costs. This paper discusses an experimental investigation on the machinability of Al-SiC particulate metal matrix composite produced by powder metallurgical process with , and %SiC. Continuous dry turning of round composite bars using titanium carbide inserts has been selected as the test method. The influence of machining parameters, e.g. cutting speed, feed and depth of cut on the tool wear, cutting forces and surface finish criteria were investigated during the experimentation. The results show that the machinability decreases with increasing SiC content. Increase of SiC content had the grater effect on the tool wear than other machinablity parameters and increases it considerably
Keywords:
Turning ; Metal Matrix Composite (MMC) ; Aluminum-Silicon Carbide Composite ; Carbide Tools

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