International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 09 | Sep 2024
p-ISSN: 2395-0072
www.irjet.net
Aluminium & BLA composite synthesis Nandita Gyanchandani1, Abhishek Govekar2, Jay Jogad3, Prof. (Dr) Rajesh Chaudhari4 1,2,3B.tech ,Mechanical Engineering, Vishwakarma Institute of Technology, Pune, Maharashtra, India
4Prof. (Dr)Rajesh Chaudhari, Dept. of Mechanical Engineering, Vishwakarma Institute of Technology, Pune,
Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - In both Internal Combustion Engine (ICE)
thermal response contributes to the reinforcement of the composite's mechanical properties.
vehicles and Electric Vehicles (EVs), weight reduction is crucial due to its direct impact on fuel efficiency, handling, and overall performance. While aluminum is a promising material for achieving this goal, its relatively low inherent strength poses a challenge. Although certain aluminum alloys offer improved strength, they come at a significant cost, limiting their widespread adoption in automotive applications. This dilemma has driven research into alternative solutions, such as composite materials, to balance weight reduction with structural integrity without incurring prohibitive expenses. One such avenue is the synthesis and characterization of an aluminum and boron-like atom (BLA) composite, which offers potential for improved strength at a lower cost. However, two primary challenges—aluminum's low inherent strength and the high cost of stronger alloys— continue to hinder its broader integration in the automotive industry, forming a critical bottleneck in fully realizing its potential as a transformative material for vehicle manufacturing.
Ceramics and metals exhibit strikingly different behaviors in response to temperature variations, a phenomenon known as thermal expansion. Ceramics boast an extraordinarily low coefficient of thermal expansion, bordering on zero. In contrast, metals possess coefficients of thermal expansion that are notably higher. This stark disparity forms the crux of the thermal mismatch phenomenon. When subjected to temperature fluctuations, the metal component of a composite material endeavors to expand in accordance with its higher coefficient of thermal expansion. However, the embedded ceramic particles, exemplified by the ceramic compounds found in Boron-Like Atom (BLA), stand in stark contrast. Their inherent resistance to expansion effectively inhibits this process. The consequence of this resistance is the emergence of localized stress points within the matrix. These stress points give rise to a phenomenon known as local plastic deformation. In essence, the ceramic particles act as fortifying agents, impeding the natural expansion of the metal matrix. This opposition results in heightened mechanical strength within the composite material.
Key Words: Weight reduction, Aluminium, Composite materials, Automotive industry, Strength-to-cost ratio.
1.INTRODUCTION
By harnessing this thermal mismatch mechanism, it becomes possible to significantly enhance the material properties of composites. This phenomenon holds relevance in the context of composite materials used in high-stress environments, as it provides a means to fortify the material without compromising other desirable characteristics.
Ceramic particle fillers have garnered significant attention in the realm of composite materials due to their profound impact on augmenting the strength of metal matrices. Several key mechanisms contribute to this enhancement, as outlined below: 1. 2. 3.
Thermal Mismatch Orowan Mechanism Grain Refinement
In conclusion, the thermal mismatch mechanism stands as a powerful tool in the pursuit of strengthening composite materials, offering a viable avenue for achieving materials with enhanced mechanical integrity and performance.
1.1 Thermal Mismatch
1.2 Orowan Mechanism
One of the primary mechanisms through which ceramic particle fillers bolster the strength of metal matrices is through the exploitation of thermal mismatch. When a composite material experiences a change in temperature, the components comprising it may expand or contract at different rates. Ceramic particles, known for their relatively low thermal expansion coefficients, introduce localized stress points within the matrix material. This disparity in
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The Orowan mechanism is a pivotal phenomenon in strengthening composite materials. It revolves around the impediment of dislocation motion within the crystal lattice structure of the matrix material. Ceramic particles act as obstacles, hindering the movement of dislocations and thereby enhancing the material's resistance to deformation.
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