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Effect of SiC Weight Percentage on Tribological Characteristics of Al7075/SiC Composites
Silicon ( IF 3.4 ) Pub Date : 2021-01-06 , DOI: 10.1007/s12633-020-00885-5
Mulugundam Siva Surya , G. Prasanthi

In aerospace and automobile industries, because of high strength and excellent anti-wear properties, aluminium silicon carbide composites are widely used. Hence, the current work investigates the tribological characteristics of powder metallurgy processed Al7075-x wt.% SiC (x = 10,15 and 20) composites using pin-on-disc equipment. Taguchi’s orthogonal array and analysis of variance are employed to study the effects of input parameters and their levels on output responses. The current study reveals that the wear loss decreases and increases when the reinforcement Wt.% changes from 10 to 20. It is also observed that the wear loss increases with an increase in load. The coefficient of friction increases with an increase in wt.% of reinforcement and sliding distance. The composite with 15 Wt.% SiC exhibits less coefficient of friction and wear loss. The wear effect was determined through morphological studies of worn out surface and worn out debris. The major influencing factors that control wear loss are sliding distance and load. The major influencing factors for coefficient of friction are % reinforcement and sliding distance. SEM analysis revealed that delamination and abrasion are the two-prominent wear mechanisms observed on worn-out surfaces of the specimens.



中文翻译:

SiC重量百分比对Al7075 / SiC复合材料摩擦学特性的影响

在航空航天和汽车工业中,由于高强度和出色的抗磨性能,铝碳化硅复合材料得到了广泛的应用。因此,当前的工作是使用针对盘设备研究粉末冶金处理的Al7075-x wt。%SiC(x = 10,15和20)复合材料的摩擦学特性。Taguchi的正交数组和方差分析用于研究输入参数及其水平对输出响应的影响。当前的研究表明,当钢筋的Wt。%从10变为20时,磨损量会减少和增加。还可以观察到,磨损量随载荷的增加而增加。摩擦系数随增强材料重量百分比和滑动距离的增加而增加。SiC含量为15 Wt。%的复合材料的摩擦系数和磨损损耗较小。通过磨损表面和磨损碎屑的形态研究确定磨损效果。控制磨损的主要影响因素是滑动距离和负载。摩擦系数的主要影响因素是增强百分比和滑动距离。SEM分析表明,分层和磨损是在试样的磨损表面上观察到的两个突出的磨损机理。

更新日期:2021-01-07
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