International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 02 | Feb 2025
p-ISSN: 2395-0072
www.irjet.net
REVIEW ON DESIGN AND FABRICATION OF CNT REINFORCED A356 NANOCOMPOSITES Atharv Gajanan Kulkarni1, Bhagyashri Sagar Kamble2, Akash Bhimashankar Koli3, Pradip Narayan Sabale4, Umar Bashalal Sharikmaslat5, Saipratik Dhanpal Admuthe6. 1,2,3,4,5Students, Department of Mechanical Engineering Sanjay Bhokare Group of Institutes Miraj, India 6 Lecturer, Department of Mechanical Engineering Sanjay Bhokare Group of Institutes Miraj, India
---------------------------------------------------------------------------***------------------------------------------------------------------------CNT reinforcement on the microstructure and mechanical Abstract: characteristics of A356 nanocomposites.
This research explores the enhancement of A356 aluminum alloy properties through carbon nanotube (CNT) reinforcement, targeting improved performance in aerospace, automotive, and electronics applications. While A356 is favored for its castability and corrosion resistance, its inherent limitations in strength and hardness can be mitigated by incorporating CNTs, known for their exceptional strength and lightweight characteristics. A review of recent literature reveals significant enhancements in tensile strength, hardness, and wear resistance in CNTreinforced A356 composites achieved via various fabrication methods, notably stir casting and compocasting. Despite these improvements, challenges such as CNT agglomeration and poor interfacial bonding remain, hindering uniform dispersion and consistent performance. This study focuses on optimizing the stir casting process to improve CNT dispersion in A356, thereby maximizing mechanical property enhancements. The results demonstrate notable gains in strength, hardness, and wear resistance, underscoring the potential of CNT reinforcement for highstress applications. Further research is essential to refine processing techniques and ensure uniformity, paving the way for broader industrial adoption of these highperformance materials.
Literature review Abbasipour et al. (2019) [1] The study examined the wear and friction characteristics of A356 aluminum alloy nanocomposites strengthened with carbon nanotubes (CNTs) and produced using various casting techniques. The research compared traditional liquid casting (stir casting) with semi-solid methods (compocasting and rheocasting), revealing that CNT addition significantly decreased wear loss, wear rate, and friction coefficient in the composite materials. Notably, compocasting improved CNT distribution and reduced void formation, leading to superior wear resistance. The primary wear mechanism differed depending on the manufacturing method: abrasion was predominant in nanocomposites, while adhesion and delamination were observed in monolithic samples. The results highlight the importance of CNTs and semi-solid casting processes in improving the tribological properties of aluminum-based composites. Carneiro & Simões, (2022) [2] This research examines the mechanical characteristics of aluminum/carbon nanotube (Al/CNT) nanocomposites fabricated through powder metallurgy techniques. The focus is on developing lightweight, high-strength materials for potential use in automotive and aerospace sectors. Previous studies indicate that properly dispersed CNTs can improve tensile strength and elasticity, although CNT clustering may reduce material ductility. In this investigation, ultrasonication was employed to disperse CNTs, resulting in a 185% enhancement in yield strength, which was attributed to load transfer mechanisms. However, the presence of CNT clusters at grain boundaries led to a decrease in ductility.
Introduction: High-performance applications in modern manufacturing require materials with exceptional strength-to-weight ratios and superior mechanical qualities. A356 aluminum alloy, frequently employed in aerospace, automotive, and electronics fields, boasts favorable castability and corrosion resistance. However, its relatively modest strength and hardness constrain its utilization in highstress environments. Carbon nanotubes (CNTs), recognized for their extraordinary strength, stiffness, and minimal weight, present an optimal solution for reinforcing A356 alloy and enhancing its mechanical properties. This investigation examines the influence of
© 2025, IRJET
|
Impact Factor value: 8.315
El Shalakany et al. (2018b) [3] investigated the effects of multi-walled carbon nanotubes (MWCNTs) on the mechanical and tribological properties of A356 aluminum
|
ISO 9001:2008 Certified Journal
|
Page 100