| Popis: |
Discontinuously reinforced cast metal-matrix composites are increasingly attracting the attention of aerospace, automotive and consumer goods industries. In this study, SiC particle reinforced aluminium alloy is selected to produce metal matrix composites (MMC) using different of parameters blade angle and stirring speed and composition of SiC reinforcement. Mechanical test, metallographic analysis and fracture analysis will be conducted to investigate mechanical properties of material and to observe particle distribution of SiC reinforcement and fracture properties respectively with varies angles and stirring speed of impellers and different composition of SiC reinforcement. Metallographic analysis on composition records at low speed, there exist a particle collection and gas existence on the specimen. At blade angles of 300, increasing on stirring speed and composition of SiC reinforcement may result better of particle distribution. For mechanical test, different composition of SiC reinforcement, blade angle and stirring speed will be affecting a mechanical property of material. The result of the experiment showed at blade angle 300, stirring speed 100rpm and 10% composition of SiC reinforcement give better result of hardness, ultimate strength, energy absorption, microstructure and fracture of composite. For this study, it proved that at the lower blade angle and the increment on stirring speed and composition of SiC reinforcement give a better result on particle distribution of SiC reinforcement, fracture and mechanical properties for A1-MMC. |
