Determination of mechanical and tribological properties of vacuum sintered hybrid reinforced Al-4Cu composites

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES
Üsame Ali Usca, Serhat Şap, Mahir Uzun, Ünal Değirmenci
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Abstract

This study aims to modernize commonly preferred hybrid aluminum composites in the automotive and defense industries. For this purpose, Al-4Cu/B4C-SiC hybrid composites were manufactured using the hot pressing method and their microstructure, mechanical, and tribological properties were investigated. SEM/EDS analyses of the samples were conducted to examine morphological characteristics. Hardness, relative density, and three-point bending tests were performed on the produced samples. Additionally, wear tests were conducted under dry sliding conditions and different loads (5-10-15 N) to investigate tribological properties. The addition of hybrid reinforcements resulted in high hardness (88.54 HB) and relative density (98.83%) values. The highest bending stress (556.9 MPa) was observed in sample AC-4 (Al-4Cu/2B4C-2SiC). The lowest mass loss (1.1 × 10−3 g) was encountered in sample AC-6 (Al-4Cu/6B4C-6SiC), where all reinforcements were present together. Plastic deformation, oxidation, and residual wear mechanisms were identified on the worn surfaces of the samples. Consequently, the addition of hybrid reinforcements to Al-4Cu composites shows promising potential in enhancing the mechanical and tribological performance of the composites.
测定真空烧结混合增强 Al-4Cu 复合材料的机械和摩擦学特性
本研究旨在将汽车和国防工业中常用的混合铝复合材料现代化。为此,采用热压方法制造了 Al-4Cu/B4C-SiC 混合复合材料,并对其微观结构、机械和摩擦学性能进行了研究。对样品进行了 SEM/EDS 分析,以检查形态特征。对制备的样品进行了硬度、相对密度和三点弯曲测试。此外,还在干燥滑动条件和不同载荷(5-10-15 N)下进行了磨损测试,以研究摩擦学特性。添加混合增强剂后,硬度(88.54 HB)和相对密度(98.83%)值都很高。在样品 AC-4(Al-4Cu/2B4C-2SiC)中观察到了最高的弯曲应力(556.9 兆帕)。样品 AC-6(Al-4Cu/6B4C-6SiC)的质量损失最小(1.1 × 10-3 g),其中所有增强材料都一起存在。在样品的磨损表面发现了塑性变形、氧化和残余磨损机制。因此,在 Al-4Cu 复合材料中添加混合增强材料有望提高复合材料的机械和摩擦学性能。
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来源期刊
Journal of Composite Materials
Journal of Composite Materials 工程技术-材料科学:复合
CiteScore
5.40
自引率
6.90%
发文量
274
审稿时长
6.8 months
期刊介绍: Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).
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