OBRABOTKAMETALLOV Vol. 26 No. 3 2024 189 MATERIAL SCIENCE Investigation of hardness behavior in aluminum matrix composites reinforced with coconut shell ash and red mud using Taguchi analysis Rishi Dewangan 1, a, Bhupendra Sharma 2, b, Shyam Sharma 3, с, * 1 Department of Mechanical Engineering, Amity University Rajasthan, Jaipur, 303002, India 2 Department of Mechanical Engineering, Amity University Uttar Pradesh, Noida, 201313, India 3 Department of Mechanical Engineering, Manipal University Jaipur, Jaipur, 303007, India a https://orcid.org/0000-0002-1973-6726, rdewangan@jpr.amity.edu; b https://orcid.org/ 0000-0002-3207-7286, bpsharma@amity.edu; c https://orcid.org/0000-0002-1510-5871, shyamsunder.sharma@jaipur.manipal.edu Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2024 vol. 26 no. 3 pp. 179–191 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2024-26.3-179-191 ART I CLE I NFO Article history: Received: 14 April 2024 Revised: 17 May 2024 Accepted: 22 June 2024 Available online: 15 September 2024 Keywords: Anova analysis Coconut Shell Ash Hardness Red Mud ABSTRACT Introduction: in present scenario, light and high strength aluminium metal matrix composite are extensively used due to its high mechanical and tribological properties. Aluminium metal matrix composite reinforced with ceramic and industrial waste can customize its mechanical-chemical behavior. The purpose of the work: to create an aluminum matrix composite material using ceramic (primary) and industrial (secondary) waste represented by red mud and coconut shell ash, respectively. The mass fraction of the strengthening phase varied from 5 to 12.5 wt. % respectively with the residual mass percentage of the aluminum alloy. Method of investigation: nine specimens of composite materials were prepared by stir casting. Stirring was carried out at a speed of 50 to 100 rpm for 20 minutes at a temperature of 800 °C. Result and Discussion: the hardness behavior of the aluminum metal matrix composite was studied at an indentation load of 10, 15 and 20 kN. Taguchi method with L27 orthogonal array was selected to conduct analysis of variance (ANOVA) and regression analysis by selecting the mass percentage of red mud and mass percentage of coconut shell ash. The indentation load was used as an input parameter, and the hardness behavior was taken as an output parameter. The signal-to-noise ratio, response rank table, contour plot, and normal probability plot are investigated and it is found that hardness values improve with the addition of both reinforcing components and indenter load. The results show that the hardness value varies from 33.34 HB to 53.44 HB, and the eff ect of red mud mass percentage is more signifi cant than the indenter load and coconut shell ash mass percentage. For citation: Dewangan R., Sharma B.P., Sharma S.S. Investigation of hardness behavior in aluminum matrix composites reinforced with coconut shell ash and red mud using Taguchi analysis. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2024, vol. 26, no. 3, pp. 179–191. DOI: 10.17212/1994-6309-2024-26.3-179-191. (In Russian). ______ * Corresponding author Sharma Shyam S., D.Sc. (Engineering), Assistant Professor Manipal University Jaipur, 303007, Jaipur, India Tel.: +91-9887765320, e-mail: shyamsunder.sharma@jaipur.manipal.edu References 1. Verma N., Vettivel S.C. Characterization and experimental analysis of boron carbide and rice husk ash reinforced AA7075 aluminium alloy hybrid composite. Journal of Alloys and Compounds, 2018, vol. 741, PP. 981– 998. DOI: 10.1016/j.jallcom.2018.01.185. 2. Bharathi P., Kumar T.S. Mechanical characteristics and wear behaviour of Al/SiC and Al/SiC/B4C hybrid metal matrix composites fabricated through powder metallurgy route. Silicon, 2023, vol. 15 (10), pp. 4259–4275. DOI: 10.1007/s12633-023-02347-0. 3. Sundarababu J., Anandan S.S., Griskevicius P. Evaluation of mechanical properties of biodegradable coconut shell/rice husk powder polymer composites for light weight applications. Materials Today: Proceedings, 2021, vol. 39, pp. 1241–1247. 4. Da Silva E.J., Marques M.L., Velasco F.G., Junior C.F., Luzardo F.M., Tashima M.M. A new treatment for coconut fi bers to improve the properties of cement-based composites – Combined eff ect of natural latex/pozzolanic materials. Sustainable Materials and Technologies, 2017, vol. 12, PP. 44–51. DOI: 10.1016/j.susmat.2017.04.003.
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