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
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
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.
王雪松, 周兵, 戴姣燕, 徐金富. Al含量对等值锌当量耐磨黄铜组织及性能的影响[J]. 材料导报, 2021, 35(20): 20124-20128.
WANG Xuesong, ZHOU Bing, DAI Jiaoyan, XU Jinfu. Effect of Al Content on Microstructure and Properties of Equal Value Zinc Equivalent Wear-resistant Brass. Materials Reports, 2021, 35(20): 20124-20128.
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2021, Vol. 35 
