A Comprehensive Investigation of BN and VC Reinforcements on the Properties of FSP AA6061 Composites

IF 3.1 3区工程技术 Q2 ENGINEERING, MECHANICAL

Lubricants Pub Date : 2023-11-30 DOI:10.3390/lubricants11120507

Essam B. Moustafa, F. Djouider, A. Alhawsawi, Ezzat A. Elmoujarkach, E. Banoqitah, S. S. Mohamed

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引用次数: 0

Abstract

This present study investigated the impact of incorporating boron nitride (BN) and vanadium carbide (VC) reinforcements on various properties of friction stir processed (FSP) AA6061 alloy composites, focusing specifically on grain structure, thermal conductivity, electrical conductivity, and compressive strength. The findings indicate that VC more effectively refines the grain structure of the AA6061 alloy during FSP compared to BN. The inclusion of BN particles in the metal matrix composites resulted in a decrease in both thermal and electrical conductivity. In contrast, the addition of VC particles led to an increase in both thermal and electrical conductivity. The AA6061/VC composite material exhibited the highest thermal conductivity among all composites tested. The electrical conductivity of the hybrid-composite AA6061/30%BN+70%VC showed a slight reduction, measuring only 2.8% lower than the base alloy AA6061. The mono-composite AA6061/VC exhibited a marginal decrease in thermal conductivity, with a measured value only 7.5% lower than the conventional alloy AA6061. However, the mono-composite AA6061/BN displayed a more significant decline, exhibiting a loss of 14.7% and 13.9% in electrical and thermal conductivity, respectively. The composite material comprising 30% BN and 70% VC reinforcement demonstrated the highest compressive strength compared to all other tested composites. The observed percentage enhancement in the mechanical properties of mono and hybrid composites, compared to the parent AA6061 alloy, ranged from 17.1% to 31.5%.

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全面研究 BN 和 VC 增强材料对 FSP AA6061 复合材料性能的影响

本研究调查了加入氮化硼（BN）和碳化钒（VC）增强材料对摩擦搅拌加工（FSP）AA6061 合金复合材料各种性能的影响，尤其侧重于晶粒结构、导热性、导电性和抗压强度。研究结果表明，与 BN 相比，VC 在 FSP 过程中能更有效地细化 AA6061 合金的晶粒结构。在金属基复合材料中加入 BN 颗粒会导致导热性和导电性降低。与此相反，加入 VC 粒子后，热导率和电导率都有所提高。在所有测试的复合材料中，AA6061/VC 复合材料的热导率最高。混合复合材料 AA6061/30%BN+70%VC 的导电率略有下降，仅比基础合金 AA6061 低 2.8%。单一复合材料 AA6061/VC 的热导率略有下降，测量值仅比传统合金 AA6061 低 7.5%。然而，AA6061/BN 单复合材料的电导率和热导率下降更为明显，分别降低了 14.7% 和 13.9%。与所有其他测试复合材料相比，由 30% BN 和 70% VC 增强材料组成的复合材料显示出最高的抗压强度。与母体 AA6061 合金相比，单体和混合复合材料的机械性能提高了 17.1% 至 31.5%。

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来源期刊

Lubricants Engineering-Mechanical Engineering

CiteScore

3.60

自引率

25.70%

发文量

293

审稿时长

11 weeks

期刊介绍： This journal is dedicated to the field of Tribology and closely related disciplines. This includes the fundamentals of the following topics: -Lubrication, comprising hydrostatics, hydrodynamics, elastohydrodynamics, mixed and boundary regimes of lubrication -Friction, comprising viscous shear, Newtonian and non-Newtonian traction, boundary friction -Wear, including adhesion, abrasion, tribo-corrosion, scuffing and scoring -Cavitation and erosion -Sub-surface stressing, fatigue spalling, pitting, micro-pitting -Contact Mechanics: elasticity, elasto-plasticity, adhesion, viscoelasticity, poroelasticity, coatings and solid lubricants, layered bonded and unbonded solids -Surface Science: topography, tribo-film formation, lubricant–surface combination, surface texturing, micro-hydrodynamics, micro-elastohydrodynamics -Rheology: Newtonian, non-Newtonian fluids, dilatants, pseudo-plastics, thixotropy, shear thinning -Physical chemistry of lubricants, boundary active species, adsorption, bonding