Özet:

Metal matrix composite materials are prevalently used in the automotive industry. In that of those applications in which lightness is a critical parameter, consumption volumes of magnesium-based materials are continuously increasing. However, their low ductility and insufficient strengths observed at room temperature significantly limit their use compared to iron, steel and aluminum both in the automotive and in industry. In the present study, composites reinforced with nickel microparticles, which have superior properties like excellent ductility, good toughness and high elastic modulus, at volumetric ratios of 0%-10% were successfully produced by the uniaxial hot pressing technique that is the powder metallurgy methods. As a result of the optimized production parameters, full density was almost reached in all samples and it was determined that they did porosity free. In addition to α (Mg) and Ni phases, Mg2Ni phase was also observed in microstructural analysis. This compound was also identified in XRD analysis. By the addition of reinforcement, 37% and 35% improvements were obtained in the room temperature yield and compressive strengths of the matrix material, respectively, and also, it was observed to have higher values than pure magnesium at all test temperatures. The composite materials, with their mechanical properties and low densities, have been established to constitute an important alternative to traditional materials used in the automotive and industry.

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