Mterials & manufacture 2 Essay Example | Topics and Well Written Essays - 1000 words

Mterials & manufacture 2 - Essay ExampleMetal matrix composites apply been receiving significant attention in recent years, specially in the area of processing techniques. In many instances the properties of a reinforced metal have been shown to provide a performance advantage over monolithic metal, but the high cost of producing the composite has prohibited widespread commercial use. Of the many potential metal matrix systems, aluminum alloy matrix composites have been the object of much research, primarily due to the light weight, low cost, and ease of fabrication of aluminum. Within the class ofAluminum alloy matrix composites there make up two distinct material systems, namely (i) dis constantly reinforced composites, with the reinforcement taking the form of a particle, a platelet, a whisker, or a chopped fiber, and (ii) continuously reinforced composites, with the reinforcement being a unidirectional or a multidirectional array of continuous fibers. Discontinuously reinforce d aluminum alloys havebeen fabricated by unhomogeneous means, including solidstate processes, such as powder metallurgy techniques (blending of metal and ceramic powders followed by hot pressing) 2, and liquid-state processes, such as compocasting (blending ceramic powder and molten aluminium, agitating and casting) and pressurized liquid-metal infiltration.During this practice work, we had get a Metal Matrix Composite (MMC). This MMC contains 10% of aluminium oxide or Alumina (reinforcement) and 90% of Aluminium alloy matrix (2618A). The aim of MMC is to improve the properties of this material. Indeed, Aluminium is ductile and Alumina (Al203) is stiff and strong. When we combine these two materials we obtain a composite with better properties. The aim of this laboratory its to compare the green stringency with the sintered density. Moreover, we can see the different structures, between green and sintered density, by an electron microscope available in the