Abstract :

Advanced Lightweight Materials Such As Aluminium-based Metal Matrix Nanocomposites Reinforced With Nanocarbon Phases Are Increasingly Explored For Aerospace Structures, With Variations In Reinforcement Content Significantly Influencing Performance. In This Work, LM25 Aluminium Alloy Reinforced With Multi-Walled Carbon Nanotubes (MWCNTs) Was Developed By Varying The Reinforcement Fraction From 0 To 2 Wt.% In Steps Of 0.5 Wt.% To Study Its Effect On Mechanical Behaviour. A Hybrid Fabrication Route Integrating Mechanical Alloying Through Ball Milling And Vacuum-assisted Stir Casting Was Employed To Ensure Effective Incorporation Of MWCNTs Into The Matrix. Micro-sized Aluminium Particles (approximate Average Particle Size Of 72 μm) Were Utilized As Carrier Media To Promote Uniform Dispersion Of Nanotubes During Processing. The Mechanical Characterization Involved Tensile Testing, Hardness Evaluation, And Impact Testing. Results Revealed A Progressive Enhancement In Tensile Strength With Increasing Reinforcement, Reaching A Maximum Of 175 MPa At 1.5 Wt.% MWCNTs, Attributed To Improved Load Transfer And Dislocation Strengthening Mechanisms. Brinell Hardness And Charpy Impact Strength Also Showed Notable Improvement, With Peak Values Of 72 BHN And 150 KJ/m2 Respectively At 1.5 Wt.% Reinforcement, Followed By A Decline Due To Agglomeration Effects. Overall, The Same Composite Sample Demonstrated The Most Balanced And Superior Mechanical Performance Among All Samples

Published:

15-4-2026

Issue:

Vol. 26 No. 4 (2026)

Page Nos:

2298 - 2305

Section:

Articles

License:

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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