Indian Journal of Engineering & Materials Sciences

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Modeling of Dry Conditioned Sliding Wear and Friction Behavior of Heat-Treated Silicon Nitride Strengthened Al Metal Matrix Nanocomposites


Affiliations
1 Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal 462 003, India
2 Department of Mechanical Engineering, GLA University, Mathura 281 406, India
 

In the presented work, the sliding wear under dry conditions and friction behaviour of Si<sub>3</sub>N<sub>4</sub> reinforced high-strength Aluminum alloy (AA)7068 nanocomposites have been investigated under various loads, sliding velocity, and rubbing distances. The fabrication of nanocomposites has been done by using the stir casting technique with the advancement of ultrasonication. Scanning electron microscope (SEM), Elemental mapping, and energy dispersive spectroscopy (EDS) are used to analyze the microstructure of prepared nanocomposites and worn surfaces. The wear resistance improves with the incorporation of Si<sub>3</sub>N<sub>4</sub> particles in Al 7068 alloy and further increases by increasing the weight % of reinforcement. The reinforcement is done by 0.5, 1, and 1.5 % Si<sub>3</sub>N<sub>4</sub> by weight. ANOVA reveals that sliding distance is the most dominating factor in the wear loss of samples, and load became the most influential parameter in the coefficient of friction (COF). Microstructure reveals grain boundaries become discontinued after T6 heat treatment. AMNCs containing 1.5wt.% Si<sub>3</sub>N<sub>4</sub> shows minimum wear loss compared to other nanocomposites and alloys.

Keywords

Aluminum Metal Matrix Nanocomposites, T6 Heat Treatment, Microstructure, Sliding Wear, Friction, Design of Experiment.
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  • Modeling of Dry Conditioned Sliding Wear and Friction Behavior of Heat-Treated Silicon Nitride Strengthened Al Metal Matrix Nanocomposites

Abstract Views: 140  |  PDF Views: 81

Authors

Ashish Kumar
Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal 462 003, India
Ravindra Singh Rana
Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal 462 003, India
Rajesh Purohit
Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal 462 003, India
Soni Kumari
Department of Mechanical Engineering, GLA University, Mathura 281 406, India

Abstract


In the presented work, the sliding wear under dry conditions and friction behaviour of Si<sub>3</sub>N<sub>4</sub> reinforced high-strength Aluminum alloy (AA)7068 nanocomposites have been investigated under various loads, sliding velocity, and rubbing distances. The fabrication of nanocomposites has been done by using the stir casting technique with the advancement of ultrasonication. Scanning electron microscope (SEM), Elemental mapping, and energy dispersive spectroscopy (EDS) are used to analyze the microstructure of prepared nanocomposites and worn surfaces. The wear resistance improves with the incorporation of Si<sub>3</sub>N<sub>4</sub> particles in Al 7068 alloy and further increases by increasing the weight % of reinforcement. The reinforcement is done by 0.5, 1, and 1.5 % Si<sub>3</sub>N<sub>4</sub> by weight. ANOVA reveals that sliding distance is the most dominating factor in the wear loss of samples, and load became the most influential parameter in the coefficient of friction (COF). Microstructure reveals grain boundaries become discontinued after T6 heat treatment. AMNCs containing 1.5wt.% Si<sub>3</sub>N<sub>4</sub> shows minimum wear loss compared to other nanocomposites and alloys.

Keywords


Aluminum Metal Matrix Nanocomposites, T6 Heat Treatment, Microstructure, Sliding Wear, Friction, Design of Experiment.

References