Dry sliding Wear behavior of Al 2024 Boron Fiber Powder Metal Matrix Composite Fabricated by Stir Casting
Creators: name: H S Kumaraswamy
name: Reddappa
name: Bharath V
name: T Krishna Rao
Publisher: name: Zenodo
Year: 2020
Subjects: Al 2024, Boron fiber, Wear rate, Stir casting

description: <em>Aluminum has good strength to weight ratio, good mechanical properties and tribological properties. In this study, Al -2024 is used as a matrix and boron fiber powder used as a reinforcement with a weight fraction of 4%,6%,8% and 10%. In the present work, stir casting technique (liquid metallurgy route) is used to fabricate Al-2024 boron fiber MMCs. The properties of aluminium (matrix) further increased by addition of new metal or nonmetal, called as reinforcement. There are different fabrication techniques are available to fabricate aluminium metal matrix composite i.e. Squeeze casting, stir casting and powder metallurgy. Compare to all other techniques, liquid metallurgy route (Stir casting) technique is the most economical and cost effective method to fabricate aluminium metal matrix composite. Tribological studies of Al-2024 boron fiber MMCs were studied in detail. Pin on disc machine was used to find the wear rate of cast composite experimentally. Load, sliding distance and percentage of reinforcement are used as input parameters. And the effect of these input parameters on wear rate of Al-2024 boron fiber MMCs are studied in detail. SEM images were taken on the wear surface of Al-2024 boron fiber MMCs. These SEM images helps to analyze the type of wear mechanism and debris. Wear testing was carried out for different load, sliding distance and percentage of reinforcement, which showed the effect on wear properties. Addition of boron fiber powder into Al 2024 matrix made material harder, this caused in reduction of wear rate, similarly increased the percentage of boron fiber powder that caused material to become harder which brought reduction of wear rate of Al 2024 boron fiber MMCs.</em>
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