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首页> 外文期刊>Materials Science and Engineering >Role of hybrid ratio in microstructural, mechanical and sliding wear properties of the A15083/Graphitep/Al_2O_(3p) a surface hybrid nanocomposite fabricated via friction stir processing method
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Role of hybrid ratio in microstructural, mechanical and sliding wear properties of the A15083/Graphitep/Al_2O_(3p) a surface hybrid nanocomposite fabricated via friction stir processing method

机译：杂化比在摩擦搅拌法制备的表面杂化纳米复合材料A15083 / Graphitep / Al_2O_（3p）的微观结构，机械和滑动磨损性能中的作用

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摘要

Hybrid ratio of each reinforcement phase in hybrid composite can be defined as proportion of its volume to total reinforcement volume of the composite. The hybrid ratio is an important factor which controls the participation extent of each reinforcement phase in overall properties of hybrid composites. Hence, in the present work, surface hybrid nanocomposites of A15083/Graphite_p/Al_2O_(3p) with different hybrid ratios were fabricated by friction stir processing method. Subsequently, effect of hybrid ratio on microstructural, mechanical and tribological properties of the nanocomposite was investigated. Optical microscopy and scanning electron microscopy were utilized to perform micro-structural observation on the samples. Hardness value measurements, tensile and pin on disk dry sliding wear tests were carried out to investigate effect of hybrid ratio on mechanical and tribological properties of the nanocomposites. Microstructural investigations displayed better distribution with less agglomeration of reinforcement for lower volume fraction of reinforcement for both alumina and graphite particles. Hardness value, yield strength, ultimate tensile strength and wear rate of the nanocomposites revealed a two stage form along with hybrid ratio variation. The results are discussed based on microstructural observations of the nanocomposites and worn surface analyses.
机译：混杂复合材料中每个增强相的混杂比可以定义为其体积与复合材料总增强体积的比例。杂化比是控制杂化复合材料整体性能中每个增强相参与程度的重要因素。因此，在本工作中，通过摩擦搅拌法制备了具有不同混合比的A15083 / Graphite_p / Al_2O_（3p）表面杂化纳米复合材料。随后，研究了混合比对纳米复合材料的微观结构，力学和摩擦学性能的影响。利用光学显微镜和扫描电子显微镜对样品进行微观结构观察。进行了硬度值测量，拉伸和销钉在盘上的干滑磨损测试，以研究混合比对纳米复合材料的机械和摩擦学性能的影响。微观结构研究显示，分布更好的分布物，而增强物的聚集较少，而氧化铝和石墨颗粒的增强物的体积分数较低。纳米复合材料的硬度值，屈服强度，极限抗拉强度和磨损率显示出两个阶段的形式以及混合比的变化。基于纳米复合材料的微观结构观察和磨损表面分析讨论了结果。

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