Authors : A. Rajesh; Dr. P. Ravindra Babu; M. Vinay; M. Lakshmi Prasad; M. Hari Krishna; Ch. Anusha

Volume/Issue : Volume 11 - 2026, Issue 4 - April

Google Scholar : https://tinyurl.com/mryc22wc

Scribd : https://tinyurl.com/yeb2ed6b

DOI : https://doi.org/10.38124/ijisrt/26apr2423

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Abstract : The growing demand for lightweight and high-performance materials in engineering applications has led to the extensive development of aluminium-based hybrid metal matrix composites (HMMCs). In the present investigation, AA6061 aluminium alloy was selected as the matrix material and reinforced with a combination of Pista Shell Ash (PSA), an agrowaste material, and Silicon Carbide (SiC), a ceramic reinforcement, in varying weight percentages. The composites were fabricated using the friction stir casting technique to ensure uniform distribution of reinforcement particles and improved interfacial bonding. Four different compositions were prepared, namely unreinforced AA6061, and hybrid composites containing 1% PSA + 1% SiC, 2% PSA + 2% SiC, and 3% PSA + 3% SiC. Mechanical properties such as hardness, toughness, and compressive strength were evaluated to assess the influence of reinforcement addition. The results revealed a progressive increase in hardness and compressive strength with increasing reinforcement content, with maximum improvements of 19% and 23% respectively observed for the highest reinforcement composition. However, a reduction in toughness was observed, indicating increased brittleness due to the presence of hard ceramic phases. The study demonstrates that PSA can be effectively utilized as a sustainable reinforcement material in hybrid composites, enhancing mechanical performance while contributing to waste valorization.

Keywords : AA6061 Aluminium Alloy, Hybrid Metal Matrix Composites (HMMCs), Pista Shell Ash (PSA), Silicon Carbide (SiC), Friction Stir Casting, Mechanical Properties.

References :

1. Kumar, S., Subramanian, R., & Rao, T. S. (2014). Metal matrix composites: A review of mechanical properties. Journal of Materials Science, 49(2), 123–138. https://doi.org/10.1007/s10853-013-7801-5
2. Davis, J. R. (1993). Aluminum and aluminum alloys. ASM International. https://doi.org/10.31399/asm.hb.v02.a0001013
3. Prasad, S. V., & Asthana, R. (2004). Aluminum metal-matrix composites for automotive applications: Tribological considerations. Tribology Letters, 17(3), 445–453. https://doi.org/10.1023/B:TRIL.0000044492.91991.f3
4. Singh, J., Chauhan, A., & Singh, A. (2017). Development of agro-waste reinforced aluminium composites: A review. Materials Today: Proceedings, 4(2), 292–299. https://doi.org/10.1016/j.matpr.2017.01.031
5. Rajan, T. P. D., Pillai, R. M., & Pai, B. C. (2007). Reinforcement coatings and interfaces in aluminium metal matrix composites. Journal of Materials Science, 42(22), 10149–10161. https://doi.org/10.1007/s10853-007-1866-8
6. Rohatgi, P. K. (1993). Cast aluminum-matrix composites for automotive applications. ASM International. https://www.asminternational.org
7. Mishra, R. S., & Ma, Z. Y. (2005). Friction stir welding and processing. Materials Science and Engineering: R: Reports, 50(1–2), 1–78. https://doi.org/10.1016/j.mser.2005.07.001
8. Basavarajappa, S., Chandramohan, G., & Ashwin, M. (2006). Wear behavior of metal matrix composites: A review. Wear, 260(4–5), 449–460. https://doi.org/10.1016/j.wear.2005.02.041
9. Suryanarayana, C. (1995). Structure and properties of metal matrix composites. Progress in Materials Science, 46(1–2), 1–184. https://doi.org/10.1016/S0079-6425(99)00010-9
10. Zhang, H., & Chen, X. (2010). Compressive deformation behavior of aluminum composites. Materials Science and Engineering A, 527(7–8), 1930–1935. https://doi.org/10.1016/j.msea.2009.10.066
11. Alaneme, K. K. (2013). Mechanical behaviour of rice husk ash reinforced aluminium composites. Journal of Materials Research and Technology, 2(1), 60–67. https://doi.org/10.1016/j.jmrt.2013.02.005
12. Kumar, M., & Singh, R. (2016). Experimental investigation of bagasse ash reinforced aluminium composites. Materials Today: Proceedings, 3(10), 3484–3490. https://doi.org/10.1016/j.matpr.2016.10.033
13. Prakash, N., & Shankar, S. (2014). Investigation on coconut shell ash reinforced aluminium matrix composites. Journal of Composite Materials, 48(10), 1231–1240. https://doi.org/10.1177/0021998313480190
14. Reddy, K. H., & Reddy, B. S. (2018). Mechanical properties of hybrid aluminium composites reinforced with agro-waste. Materials Today: Proceedings, 5(2), 8376–8383. https://doi.org/10.1016/j.matpr.2017.11.523
15. Smith, L., & Hashemi, J. (2010). Foundations of materials science and engineering (5th ed.). McGraw-Hill. https://www.mheducation.com