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Composite materials are less weighty, stronger or also cheaper. A composite material is usually composed of two or more identical or different metals. It examines the mechanical behaviour, in the production of specimens in different silicon nitride compositions, of Aluminium Alloy 6063 metal matrix composites with controlled (or) bagasse ash (BA) a...
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... In the compression test, the loads will vary with different levels, for instance with 0% the load will rise to 259 MPa, the load will increase to 3%, the load will increase slightly, with 292 MPa and 6% the load will rise continuously, with 385 MPa and 9% the load will last, like 386 MPa. At the end of the test, the load will vary by the loads. Fig. 3. Table 6 shows the impact on the force of tensile strength of Aluminum alloy 6063 on Si3N4 silicone and bagasse ash. In 0 per cent stress test the charge will rise to 150 MPa, a slight increase of the load is expected by 3 percent, with 161 MPa, a further increase of 6 per cent in the load by a small amount of 165 MPa, a sudden ...
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One of the major challenges encountered during friction stir processing (FSP) is the establishment of a process parameter window in order to achieve processed surfaces with an acceptable quality as it is an exhaustive task that involves enormous resources, time, and efforts. Sometimes this task is so difficult that the trial may run into futility....
In the present scenario, the global demand is increasing drastically for lightweight, high
performance, good mechanical properties as well as environment friendly, wear, erosion safe materials due to the large applications in engineering fields as well as various industries. No need to say that these are not monolithic materials, but composites whi...
In this work, the viability of Friction Stir Processing (FSP) was explored as a potential method to enhance the tribological properties of aerospace alloy AA2219-T87. The dry sliding wear properties of FSP, and as-received AA2219 alloy in mild and severe wear regimes were studied using a vertical- interaction tribometer by varying contact pressures...
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... One of the key advantages of FSP is its ability to join dissimilar materials and produce complex shapes with high precision [24]. This makes it particularly well-suited for fabricating aluminum composites, where uniform mixing and distribution of reinforcing agents are crucial for optimizing material properties [25][26][27][28]. Additionally, FSP offers several benefits over conventional welding techniques, including lower distortion, reduced residual stresses, and improved mechanical properties. ...
In the realm of composite manufacturing, this study delves into the innovative approach of enhancing Aluminum-Based Composite Manufacturing through Si3N4 Reinforcement leveraged via Friction Stir Process (FSP). The FSP technique, executed with precision using a vertical milling machine, intricately fabricates composite materials with unparalleled properties. Meticulously chosen parameters including pin diameter, tool tilt angle, and tool profile, coupled with precise tool traversal and rotation, define the operation. The composite substrate, composed of AA 2024, undergoes stringent cleanliness protocols before Si3N4 powders are strategically placed into a designated groove on the titanium surface for processing. Microscopic examination reveals the uniform dispersion of Si3N4 particles within the aluminum matrix, profoundly enhancing mechanical properties. The tensile strength experiences a remarkable 21.45% improvement, while hardness witnesses a significant enhancement of 36.9%. Additionally, fatigue strength is notably improved by 24.12%, and wear resistance sees a substantial boost of 30.44% following Si3N4 nanoparticle integration via FSP.
... Silicon nitride is a group of advanced engineering ceramics with high strength, hardness, wears resistance, and good thermal stability [21,22]. Further, the silicon nitride has a high hardness strength range from Mohs scale 9 [23]. This could improve the material strength even more. ...
The main goal of this present research was to find out how combining hybridized fiber (aluminized glass and kenaf fiber) and biomass-derived bioceramic silicon nitride (Si3N4) affected the mechanical, wear, thermal conductivity, and flammability behavior of a composite made of polyester. Using a thermo-chemical method, rice husk ash was used to create Si3N4, which was then surface-treated with an aminosilane. Compression molding was used to create the composites, and they were then post-cured at 120 °C. The study’s findings showed that the mechanical properties were enhanced by the inclusion of Si3N4 in addition to aluminized glass/kenaf fiber. Composite A3, which contains 3 vol.% Si3N4, has the improved tensile, flexural, impact, interlaminar shear strength, and compression strength of 138 MPa, 192 MPa, 6.7 J/m, 28 MPa, and 152 MPa. The SEM fractographs showed enhanced toughness in the matrix and highly reactive phases of the reinforcements. Similarly, the wear resistance was increased to 0.12 mm3/Nm of sp. wear rate and 0.24 coefficient of friction by the composite designation A4 with 5 vol. % of Si3N4. Furthermore, the Si3N4-rich A4 composite has the lowest recorded thermal conductivity of 0.214 W/mK. Additionally, the A4 designation explicated a lowest flame propagation speed of 6.14 mm/min (V-0 flame rating) with a lower water absorption % of 0.008. Therefore, it is worthwhile to fully incorporate Si3N4 in addition to hybridized fiber to enhance load bearing capacity, increase wear resistance, and reduce heat transfer in composites with potential structural, automotive, drones, and military equipment applications.
... The considered thermal problem is managed by the general heat transfer equation in 3D. We therefore consider the following simplifying assumptions [23,24]: ...
... Reinforcement of metals is mostly used to alter their characteristics to meet the demands of design. A reinforcing component is dispersed across a metal matrix to produce MMCs [8][9][10]. To prevent the matrix from reacting with the reinforcing surface, a coating may be applied. ...
... e aluminium-7075 which is used in this investigation is the strongest alluminium alloy known to man Zinc serves primarily as an alloying ingredient in aluminum alloys. In this aluminum alloy, zinc serves as the principal alloying element and contributes to the alloy's superior mechanical qualities [8][9][10]. It is more prone to embrittlement than many other aluminum alloys. ...
Producing items that are of both high quality and long lasting is a di cult task for companies right now. ere is a huge need for a wide range of engineering materials in today's technologically advanced globe. e strength and qualities of the material determine the amount of material that may be used. Due to its excellent mechanical qualities and low density, aluminum-7075 alloy is mostly employed in transportation applications such as aerospace, marine, and vehicle production. is study addresses the fabrication and characterization of Al7075 semisolid metal matrix composite (MMC) reinforced with graphene nanoparticles. Samples are made with and without stirring graphene in aluminum-7075 at various temperatures of 800°, 830°, 860°, 890°, and 920°C. At these temperatures, the material is semisolid, so graphene is introduced and stirred into the molten liquid. e specimens meet the requirements of the American Society for Testing and Material (ASTM). e hardness, tensile strength, impact strength, and compression strength of various materials are evaluated and compared. Temperature lowers tensile strength, hardness, and compression. A scanning electron microscope (SEM) is used to examine the microstructure. e specimen is evaluated using ANSYS. Specimens with stirring have better mechanical characteristics. Graphene has high hardness and strength.
