[Retracted] Synthesis, Mechanical, and Tribological Performance Analysis of Stir‐Casted AA7079: ZrO2 + Si3N4 Hybrid Composites by Taguchi Route

Abstract

Currently, the aluminum alloys are utilized more in level of all industries for different applications; furthermore, industries need high-strength alloys for making innovative components. For those reasons, many researchers hope to prepare hybrid aluminum metal matrix composites at various composition levels. In this experimental work, we intended to prepare the hybrid metal matrix composites such as aluminum alloy 7079 with reinforcement of ZrO2 + Si3N4 through stir-casting process. Major findings of this work, as to optimize the stir-casting process, can be to continually conduct wear test and evaluate the microhardness of the stir-casted specimens. Optimization of stir-casting process parameters is a preliminary work for this research by Taguchi tool. The chosen parameters are % of reinforcement (0%, 4%, 8%, and 12%), agitation speed (450 rpm, 500 rpm, 550 rpm, and 600 rpm), agitation time (15 min, 20 min. 25 min, and 30 min), and molten temperature (700°C, 750°C, 800°C, and 850°C). The prepared stir-casted materials are tested by wear analysis and microhardness analysis, through Pin-on-Disc wear tester and Vickers hardness tester, respectively. Wear parameters are optimized, the minimum wear rate is evaluated, and also the wear worn-out surfaces are examined through SEM analysis.

Enhancing Aluminum-Based Composite Manufacturing: Leveraging Si3N4 Reinforcement via Friction Stir Process

“…Si3N4 nanoparticles, when incorporated into the aluminum matrix via FSP, act as hardening agents by hindering dislocation movement and increasing grain boundary cohesion. This results in a composite material with significantly enhanced resistance to indentation and scratching, translating into a notable increase in hardness [50]. FSP enables precise control over the dispersion of Si3N4 nanoparticles throughout the aluminum matrix, ensuring a uniform distribution and optimizing load transfer mechanisms [51].…”

Wire Electrical Discharge Machining Characteristics of Al-4.4 Mg-0.7 Mn-0.15 Cr-12 wt.% MoO3 Composites Using Taguchi Technique

“…rough the SC process, fine dispersal of reinforcement with matrix could be possible [12]. SC method was extremely concerned to improve the mechanical behaviour and reinforcement of various alloy materials for strengthening of harder particles [13]. Traditional machining methods such as turning and milling are not appropriate for machining composite materials.…”

Retracted: Synthesis, Mechanical, and Tribological Performance Analysis of Stir-Casted AA7079: ZrO2 + Si3N4 Hybrid Composites by Taguchi Route

“…Tis article has been retracted by Hindawi, as publisher, following an investigation undertaken by the publisher [1]. Tis investigation has uncovered evidence of systematic manipulation of the publication and peer-review process.…”