METALS AND METAL MATRIX COMPOSITES |
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Effect of Al Content on Microstructure and Properties of Equal Value Zinc Equivalent Wear-resistant Brass |
WANG Xuesong1,2, ZHOU Bing1, DAI Jiaoyan2, XU Jinfu2
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1 Institute of New Carbon Materials, Taiyuan University of Technology, Taiyuan 030024, China 2 School of Materials and Chemical Engineering, Ningbo Institute of Engineering, Ningbo 315211, China |
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Abstract In order to study the effect of Al content on the microstructure, mechanical properties and friction and wear properties of wear-resistant brass, three kinds of wear-resisting brass alloys with different Al content (1.3wt% Al, 2.4wt% Al, 3.6wt% Al) and equivalent zinc were prepared. The microstructure, mechanical properties and friction and wear properties of three kinds of wear-resistant brass were observed and studied by optical microscope (OM), scanning electron microscope (SEM), X-ray diffraction (XRD), tensile testing machine and friction and wear testing machine. The results show that the microstructure of the alloy is α phase, β phase, eutectic phase strengthening phase and primary strengthening phase. When the zinc equivalent remains unchanged, α phase and β phase are basically the same with the increase of Al content, the number of eutectic phase strengthening phase increases and the number of primary strengthening phase decreases, resulting in the decrease of the average grain size of the strengthening phase. With the increase of Al content, the hardness、tensile strength and yield strength of the alloy increased by 31.6%, 22.4% and 67.3% respectively, and the elongation and wear rate decreased by 64.2% and 40.8% respectively.
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Published: 12 November 2021
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Fund:This work was financially supported by Ningbo 2025 Science and Technology Major Project (2019B10084). |
Corresponding Authors:
zhoubing@tyut.edu.cn
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About author:: Xuesong Wang, a postgraduate student. He studied in Taiyuan University of Technology from July 2018 to July 2019, and studied in Ningbo Institute of Engineering from July 2019 to July 2020, mainly engaged in the research of high-performance copper alloy. Bing Zhou, associate professor, Taiyuan University of Technology. In 2014, he received a doctor’s degree in materials science from Gomery National University of Belarus. In the same year, he entered Taiyuan University of Technology to teach. In 2015, he was promoted to associate professor. Mainly engaged in the research of functional film materials and superhard coating mate-rials. More than 50 academic papers have been published, including 16 SCI papers and 3 EI/ISTP papers as the first/corresponding author. |
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