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Abrasive wear behavior of WC nanoparticle reinforced magnesium metal matrix composites
Surface Topography: Metrology and Properties ( IF 2.7 ) Pub Date : 2020-04-04 , DOI: 10.1088/2051-672x/ab82a1
Sudip Banerjee 1 , Suswagata Poria 2 , Goutam Sutradhar 1, 3 , Prasanta Sahoo 1
Affiliation  

In this study, abrasive wear characteristics of AZ31-WC nanocomposites with varying weight percentage of nanoparticles (0, 0.5, 1, 1.5 & 2) are examined. AZ31-WC nanocomposites have been fabricated by ultrasonic vibration assisted stir casting method. Optical microscopy and scanning electron microscopy are employed to perform characterizations of cast composites. Density and micro hardness of nanocomposites are also investigated. Effect of abrasive grit size and sliding distance on abrasive wear behavior and friction behavior of nanocomposites are evaluated using pin-on-disc tribotester. Worn surfaces are studied with the help of 3D optical surface plotter, SEM and EDAX to find dominant wear mechanism at several experimental conditions. Microscopic observations disclose that distribution of WC nanoparticles is uniform throughout the matrix. Density and micro hardness increase with increasing percentage of WC nanoparticles. Moreover, significant improvement in wear resistance...

中文翻译:

WC纳米颗粒增强镁金属基复合材料的磨粒磨损行为

在这项研究中,研究了纳米颗粒重量百分比(0、0.5、1、1.5和2)变化的AZ31-WC纳米复合材料的磨料磨损特性。AZ31-WC纳米复合材料已通过超声振动辅助搅拌铸造法制备。采用光学显微镜和扫描电子显微镜对铸塑复合材料进行表征。还研究了纳米复合材料的密度和显微硬度。磨料粒度和滑动距离对纳米复合材料的磨料磨损行为和摩擦行为的影响使用销盘式三botester进行了评估。借助3D光学表面绘图仪,SEM和EDAX对磨损的表面进行了研究,以发现在几种实验条件下的主要磨损机理。显微镜观察表明,WC纳米颗粒在整个基质中的分布是均匀的。密度和显微硬度随WC纳米颗粒百分比的增加而增加。此外,耐磨性显着提高。
更新日期:2020-04-13
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