Influence of the effect of the ball burnishing process applied to Al 7075-T6 alloy in different nano-aluminum powder-added grease environment on surface quality
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Abstract
Surface roughness is a very important factor in determining the quality of the product to be obtained, as it affects the production cost and performance of mechanical parts. Surface quality is considered primarily as a design parameter for determining functional properties such as corrosion resistance and fatigue strength of the part. Therefore, this study aims to improve the surface roughness of Al 7075-T6 material, which is generally used in aerospace and defense industries. In addition, Al 7075-T6 alloy is an aluminum alloy used in parts that require high strength in the military and aircraft industry, automotive industry, and nuclear applications. To increase the surface quality of the parts, a ball burnishing apparatus was designed and experiments were carried out by determining four different force parameters. At the same time, the forces were completed in environments where different ratios (0, 1, 3, 5, and 10% by weight) of nano-Al powders were added to the grease. Thanks to these powders, it is aimed to increase the quality of the surface of the ball burnishing Al 7075-T6 alloy. Ball burnishing is a simple, fast, and inexpensive surface improvement process that is used to remove irregularities on the surfaces of materials after processing. This method is a known method of mechanical surface treatment to impart certain physical, mechanical, and tribological properties to the workpiece. This process is based on the principle of burnishing the workpiece with an apparatus to remove the irregularities on the surface by plastic deformation. As a result of the experiment, the effect of each parameter on the surface quality of the Al-7075-T6 alloy was investigated. Thus, the most suitable test parameters affecting the surface quality of Al-7075-T6 alloy were determined.
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