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Development of an AA 7075 Wear-Resistant Coating on AA 6082 via Friction Surfacing: Optimization and Characterization
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Development of an AA 7075 Wear-Resistant Coating on AA 6082 via Friction Surfacing: Optimization and Characterization
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Development of an AA 7075 Wear-Resistant Coating on AA 6082 via Friction Surfacing: Optimization and Characterization
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Journal Article
Development of an AA 7075 Wear-Resistant Coating on AA 6082 via Friction Surfacing: Optimization and Characterization
2023
Overview
In the present research, the friction surfacing process has been used to deposit a wear-resistant and fully bonded AA7075 coating on an AA6082 substrate. Taguchi L9 orthogonal array was used to design the experiments and to study the effects of process parameters, such as the AA7075 consumable rod rotational speed (1000, 1200, and 1400 rpm), transverse speed (140, 160, and 180 mm/min), and consumable rod diameter (18, 20 and 22 mm), on the bond strength and wear resistance of the deposited coatings. The Taguchi gray relational analysis technique was employed to optimize the process parameters. A ram tensile test, dry sliding wear test, and microhardness test were employed to study the coatings’ bond strength, wear resistance, and hardness, respectively. The Taguchi gray relational analysis demonstrated that the optimal parametric setting included a rotational speed of 1000 rpm, a transverse speed of 180 mm/min, and a consumable rod diameter of 20 mm, which resulted in a hard coating with a bond strength of 128.54 MPa and 46.38% wear resistance compared to the AA 6082 substrate. The analysis of variance results indicate that the rotational speed contributes the most to the coating’s wear resistance and bond strength, followed by the transverse speed and consumable rod diameter. Moreover, the ductile failure mode was observed in the coatings during the ram tensile test, and the coatings exhibited adhesion, followed by the abrasion type of wear mechanism during wear testing.
Publisher
Springer US,Springer Nature B.V
