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<p>In the present study, Al 2219 alloy reinforced with Flyash and Carbon Nanotube (CNT) particles was produced by the Stir casting process. Three process parameters such as controlled Reinforcement Percentage, Stir speed, and Melt temperature, have been taken for improving homogeneity and proper reinforcement distribution during stir casting process. The nine experimental runs were conducted as per L9 orthogonal array. These samples were used for wear testing in a pin-on-disc apparatus to study the wear rate and Coefficient of Friction (COF). The process parameters were optimised using Taguchi technique and GRA method to obtain the best parameter settings in minimising wear and COF. The results show that the optimum combination of process parameters (RE3–SD1–ME3) was reinforcement quantity of 6 wt%, stirring speed of 400&#xa0;rpm and melting temperature of 800&#xa0;°C, greatly reduced both Wear rate and COF, indicating improved tribological performance. ANOVA for Taguchi- GRA responses revealed that stir speed had the highest impact on wear behaviour and contributed 61.2%, followed by melting temperature (23.8%) and percentage reinforcement (8.23%) and stir speed was the most significant factor because the P value is less than 0.05. The combination of Taguchi and GRA approaches effectively identified the optimum process parameters, which demonstrated that careful selection of the parameters can greatly enhance the wear resistance and friction properties of stir-cast-produced Al2219/Flyash/CNT composites.</p>

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Experimental and statistical analysis of tribological properties in Stir-Cast Al2219 hybrid composites using Taguchi- GRA method

  • 期刊论文

  • 发表日期：

    2026年1月6日

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  • Bhiksha Gugulothu,
  • S. Karthikeyan,
  • Kunche Krishna Chaitanya,
  • Chinnam Durga Jaya Teja,
  • Vijayakumar Sivasundar

摘要

In the present study, Al 2219 alloy reinforced with Flyash and Carbon Nanotube (CNT) particles was produced by the Stir casting process. Three process parameters such as controlled Reinforcement Percentage, Stir speed, and Melt temperature, have been taken for improving homogeneity and proper reinforcement distribution during stir casting process. The nine experimental runs were conducted as per L9 orthogonal array. These samples were used for wear testing in a pin-on-disc apparatus to study the wear rate and Coefficient of Friction (COF). The process parameters were optimised using Taguchi technique and GRA method to obtain the best parameter settings in minimising wear and COF. The results show that the optimum combination of process parameters (RE3–SD1–ME3) was reinforcement quantity of 6 wt%, stirring speed of 400 rpm and melting temperature of 800 °C, greatly reduced both Wear rate and COF, indicating improved tribological performance. ANOVA for Taguchi- GRA responses revealed that stir speed had the highest impact on wear behaviour and contributed 61.2%, followed by melting temperature (23.8%) and percentage reinforcement (8.23%) and stir speed was the most significant factor because the P value is less than 0.05. The combination of Taguchi and GRA approaches effectively identified the optimum process parameters, which demonstrated that careful selection of the parameters can greatly enhance the wear resistance and friction properties of stir-cast-produced Al2219/Flyash/CNT composites.