Anodic coatings are produced onto the surface of various components at aircrafts, made of aluminum alloys, in order to enhance their surface properties. The 2xxx series aluminum alloy are commonly applied, e.g., in the aircraft industry, due to its good mechanical properties. The anodic coatings of good quality can be easily produced onto 2xxx series aluminum alloy. Aluminum’s susceptibility to friction wear is a major concern. For this reason, metallic and non-metallic coating methods, the most known of which is anodizing, have been developed to increase the life and quality of the produced part, to reduce the effects of adverse conditions in the working environment and to improve some of its surface properties. Another alternative method used in the functionalization of material surfaces, such as many metals and their alloys was laser processing. Laser surface functionalization improves wear resistance, adhesion between coating and metal, improvement of tribological performance on metallic surfaces and many more important characters. The aim of this work was to establish the influence of the fiber laser fluences on the surface resistance of anodized AA2024-T3 aluminum alloys and to understand the relation between coefficient of friction (COF) and the critical load (Lc) values. First of all, Surface roughness (Ra) values of fiber laser treated AA2024-T3 aluminum surfaces under various laser fluences were determined by using 3D optical profilometer device. After anodizing process, Scratch tests were applied to the anodized AA2024-T3 aluminum samples under a scratch loading rate of 25 N/min. The fiber laser parameters that will provide surface resistance were determined according to the changes in COF and Lc values.
Anahtar Kelimeler: Fiber Laser Treatment, Scratch Test, Anodizing, Aluminum Alloy
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