Modeling of wear performance and surface roughness of AA6061-T6/B4C composite under dry sliding conditions by RSM

IF 2.3 4区 工程技术 Q2 ENGINEERING, MECHANICAL
Saleh S Abdelhady, Ahmed Nabhan, Said H Zoalfakar, Rehab E Elbadawi
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引用次数: 0

Abstract

The present study is an attempt to investigate the tribological behavior of friction stir processing (FSP) AA6061-T6 alloy reinforced with boron carbide (B4C) particles. The surface composites were developed to investigate wear performance and surface roughness under dry sliding conditions. The experiments were conducted using response surface methodology (RSM) to examine the effects of various B4C volume fractions, applied loads, and sliding distances. All combinations of reinforcements in AA6061-T6 hybrid composites show a good improvement in the wear properties. The results show that the wear behavior of composites is significantly impacted by the incorporation of B4C particles. This is mostly owing to the uniformity that the B4C particles developed when they distributed the reinforcements evenly in the AA 6061-T6 matrix. Analysis of variance, main effect and three-dimensional plots were used to quantify the effects of dry sliding parameters on tribological properties. The findings showed that the optimal parameters for the effective reduction of specific wear rate and coefficient of friction were a volume fraction of 10%, an applied load of 20 N, and a sliding distance of 500 m. To minimize surface roughness, the optimal test conditions were found to be 10% volume fraction, 40 N applied load, and 2500 m sliding distance. The wear surface was analyzed using energy dispersive spectroscopy (EDX) and scanning electron microscopy (SEM). The results showed that oxide layer formation was present on the wear surface and adhesive wear was the primary wear mechanism.
利用 RSM 建立干滑动条件下 AA6061-T6/B4C 复合材料的磨损性能和表面粗糙度模型
本研究试图研究用碳化硼(B4C)颗粒增强的摩擦搅拌加工(FSP)AA6061-T6 合金的摩擦学行为。表面复合材料的开发是为了研究干滑动条件下的磨损性能和表面粗糙度。实验采用响应面方法 (RSM) 来研究各种 B4C 体积分数、外加载荷和滑动距离的影响。AA6061-T6 混合复合材料中的所有增强剂组合都能很好地改善磨损性能。结果表明,B4C 颗粒的加入对复合材料的磨损行为有显著影响。这主要是由于 B4C 颗粒在 AA 6061-T6 基体中均匀分布增强材料时产生的均匀性。采用方差分析、主效应和三维图来量化干滑动参数对摩擦学特性的影响。研究结果表明,有效降低比磨损率和摩擦系数的最佳参数是 10%的体积分数、20 N 的外加载荷和 500 米的滑动距离;要使表面粗糙度最小,最佳试验条件是 10%的体积分数、40 N 的外加载荷和 2500 米的滑动距离。使用能量色散光谱(EDX)和扫描电子显微镜(SEM)对磨损表面进行了分析。结果表明,磨损表面有氧化层形成,粘着磨损是主要的磨损机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
3.80
自引率
16.70%
发文量
370
审稿时长
6 months
期刊介绍: The Journal of Process Mechanical Engineering publishes high-quality, peer-reviewed papers covering a broad area of mechanical engineering activities associated with the design and operation of process equipment.
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