Balanced Mechanical and Tribological Performance of High-Frequency-Sintered Al-SiC Achieved via Innovative Milling Route—Experimental and Theoretical Study

Abstract

In this study, Al-SiC nanocomposite was fabricated via powder metallurgy route using different innovative high-energy ball-milling techniques (HEBM). The powder mixture was consolidated using high-frequency induction heat sintering process (HFIHS). With the aim of studying the physical, mechanical, and tribological performance of the fabricated nanocomposites. Relative density, hardness, compressive yield strength, Young’s modulus, toughness, elongation, specific wear rate and coefficient of friction were experimentally investigated. A finite element model for the frictional process was built to find out the distribution of contact stresses as result of samples sliding. It was found that the highest the energy of the milling, the more improvement in the mechanical and tribological performance could significantly achieved due to the homogeneous distribution and the excellent bonding effect of the composite. In addition, field emission scanning electron microscope was used for studying the sliding surface morphology in order to explicate the mechanism of the dry wear process.

Evaluation of Mechanical and Tribological Properties of Corn Cob-Reinforced Epoxy-Based Composites—Theoretical and Experimental Study

“…The illustrated deterioration in the epoxy surface explains the cause of the increased specific wear rate. Furthermore, the weak separated layers increased the shear resistance; thus, the measured friction coefficient increased [40].…”

“…The illustrated deterioration in the epoxy surface explains the cause of the increased specific wear rate. Furthermore, the weak separated layers increased the shear resistance; thus, the measured friction coefficient increased [40]. The rubbed surface depicts diversified wear mechanisms such as micro-cutting; its propagation resulted in the debonding of some material from the epoxy sample surface.…”

A Cuckoo Search Algorithm Using Improved Beta Distributing and Its Application in the Process of EDM

“…The most common multi-vectors are cubic-mounted 3C/SiC and hexagonal macro 4H, 6H/SiC. Fouly et al made Al/SiC composites in high-frequency sintering methods and studied their mechanics and tribological properties [29]. Chen et al adopted a vacuum pressure impregnation method to prepare a high-volume fraction of high thermal conductivity SiC/Al composites [30].…”

Alloying Elements Effects on Electrical Conductivity and Mechanical Properties of Newly Fabricated Al Based Alloys Produced by Conventional Casting Process

“…Alloying elements such as copper, magnesium and silver offer superb mechanical properties of the alloy at higher temperature values. Moreover, creep resistance is improved due to the uniform and fine precipitate distribution formed along the boundaries [10][11][12]. Additional benefits of copper additives include increasing the hardness and strength of aluminum casting alloys at all temperature levels and all heat treatment conditions, which leads to an improvement of the machinability of the fabricated alloys [13].…”