Effects of Rare Earth Pr/Ce on Tribological Behavior of ADC12 Alloy
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2021年第1期
论文作者：徐李宵 闫洪 LIU Wei XIONG Junjie
文章页码：136 - 142
摘 要：The microstructure and microhardness of ADC12 alloy that was mixed with 0,0.3,0.6,and 0.9 wt.% rare earth praseodymium/cerium （Pr/Ce） were studied.The addition of Pr/Ce improved the microhardness of the alloys.The ADC12+0.6 wt% Pr/Ce alloy displayed the smallest grain size and maximal microhardness.The tribological behavior of the alloys was tested by the pin-on-disc dry sliding friction pair with a sliding velocity of 0.21 m/s under various loads （20,40,60,80 N）.The wear morphology was observed by a scanning electron microscope （SEM） and the wear mechanism was discussed.The result indicated that the wear resistance of ADC12+0.6 wt% Pr/Ce alloy was the most optimal.The wear rate relative to the matrix is reduced by 67.5% under a load of 20 N.The wear mechanism is adhesive wear.
徐李宵1,2，闫洪1,2，LIU Wei1,2，XIONG Junjie1,2
1. School of Mechanical and Electrical Engineering, Nanchang University2. Key Laboratory of Light Alloy Preparation and Processing
摘 要：The microstructure and microhardness of ADC12 alloy that was mixed with 0,0.3,0.6,and 0.9 wt.% rare earth praseodymium/cerium （Pr/Ce） were studied.The addition of Pr/Ce improved the microhardness of the alloys.The ADC12+0.6 wt% Pr/Ce alloy displayed the smallest grain size and maximal microhardness.The tribological behavior of the alloys was tested by the pin-on-disc dry sliding friction pair with a sliding velocity of 0.21 m/s under various loads （20,40,60,80 N）.The wear morphology was observed by a scanning electron microscope （SEM） and the wear mechanism was discussed.The result indicated that the wear resistance of ADC12+0.6 wt% Pr/Ce alloy was the most optimal.The wear rate relative to the matrix is reduced by 67.5% under a load of 20 N.The wear mechanism is adhesive wear.
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