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A Study of Characteristics of Aluminum Bronze Coatings Applied to Steel Using Additive Technologies

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Department of Metal Forming, South Ural State University, Lenin prospect 76, Chelyabinsk 454080, Russia
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Department of Materials Science, Physical and Chemical Properties of Materials, South Ural State University, Lenin prospect 76, Chelyabinsk 454080, Russia
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Scientific and Educational Center “Engineering”, South Ural State University, Lenin prospect 76, Chelyabinsk 454080, Russia
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Resource Center for Special Metallurgy, South Ural State University, Lenin prospect 76, Chelyabinsk 454080, Russia
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Foundry Department, South Ural State University, Lenin prospect 76, Chelyabinsk 454080, Russia
*
Author to whom correspondence should be addressed.
Materials 2020, 13(2), 461; https://doi.org/10.3390/ma13020461
Received: 26 December 2019 / Revised: 15 January 2020 / Accepted: 16 January 2020 / Published: 18 January 2020
(This article belongs to the Section Manufacturing Processes and Systems)
The influence of laser power on the microstructural, strength, and tribological characteristics of aluminum bronze coatings applied to steel by laser cladding was studied. It was found that with an increase in laser power, the morphology of the coating surface becomes more uniform without extreme height differences. This study revealed that the coating microstructure corresponds to that of a composite material and consists of a bronze matrix and iron dendrites of different sizes (depending on the laser power). Such a microstructure affects the microhardness indices, which have a scatter of values over the coating thickness. There is a diffusion zone at the steel–bronze interface, which promotes adhesion of the matrix and coating materials. According to the results of tribological tests, the dry friction coefficient for the studied samples is in the range of 0.389–0.574. View Full-Text
Keywords: protective coating; aluminum bronze; additive technologies; microstructure; microhardness; tribological characteristics protective coating; aluminum bronze; additive technologies; microstructure; microhardness; tribological characteristics
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Samodurova, M.; Shaburova, N.; Samoilova, O.; Radionova, L.; Zakirov, R.; Pashkeev, K.; Myasoedov, V.; Erdakov, I.; Trofimov, E. A Study of Characteristics of Aluminum Bronze Coatings Applied to Steel Using Additive Technologies. Materials 2020, 13, 461.

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