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Effect of T6 Treatment on Wear Behavior of Al-7Si/ ZrSiO4 Composites

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Abstract

The effect of thermal treatment on microstructure and tribological behavior of Al-7Si/ZrSiO4 reinforced composites has been investigated. Composites with 5, 10 and 15 vol.% of ZrSiO4 particles were produced using stir casting process. Produced composite samples were then further subjected to T6 heat-treatment by subjecting the cast samples for solution treatment for 4 h at 540 °C followed quenching in water and artificial ageing at 170 °C for 5 h. Microstructure of the composite samples revealed uniform distribution of ZrSiO4 particles. Hardness of the T6 thermal treated samples was found to be superior to that of Al-7Si alloy and hardness of the composite samples increased with increase in wt.% of ZrSiO4 particles. Non heat treated alloy and composite reinforced with 15 wt% of ZrSiO4 possessed a maximum hardness of 68 BHN and 110 BHN respectively. Whereas T6 heat treated Al-7Si alloy and composite reinforced with 15 wt% of ZrSiO4 exhibited a maximum hardness of 84 BHN and 146 BHN respectively. T6 treated composites exhibited superior resistance to wear, when compared to the base alloy. As cast Al-7Si alloy exhibited maximum wear rate of 14.3 × 10−3 mm3/m, where as non heat treated 15 wt.% ZrSiO4 reinforced composites exhibited a wear rate of 7.6 × 10−3 mm3/m and wear rate was found to further reduce to 4.0 × 10−3 mm3/m by T6 treatment. SEM images of the wear tested samples showed the adhesive wear and abrasive wear as the dominant wear mechanisms.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, Coimbatore, India

    T. Satish Kumar

  2. Department of Physics, PSG Polytechnic College, Coimbatore, Tamilnadu, India

    S. Shalini

  3. Department of Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore, India

    G. Suganya Priyadharshini

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  1. T. Satish Kumar
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  2. S. Shalini
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  3. G. Suganya Priyadharshini
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Correspondence to S. Shalini.

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Kumar, T.S., Shalini, S. & Priyadharshini, G.S. Effect of T6 Treatment on Wear Behavior of Al-7Si/ ZrSiO4 Composites. Silicon 13, 1051–1058 (2021). https://doi.org/10.1007/s12633-020-00492-4

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  • DOI: https://doi.org/10.1007/s12633-020-00492-4

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