Production and Characterization of Aluminum Matrix Composite Reinforced with Mo₂C Particles via Vortex Casting Process
Subject Areas : journal of New MaterialsSeyyed Mahdi Karamouz 1 * , Erfan Mehdipour Rabori 2
1 -
2 - Shahid Bahonar University of Kerman, Faculty of Engineering and Technology, Department of Materials and Metallurgical Engineering
Keywords: Metal matrix composite, aluminum, Mo2C, wear, centrifugal casting.,
Abstract :
This study investigates the production and characterization of aluminum-molybdenum carbide (Mo₂C) composite using the stir casting method. The objective is to determine the effect of different Mo₂C weight percentages on the mechanical and tribological properties of the composite. Pure aluminum alloy was melted at 850°C, and Mo₂C powder was added to the molten metal. Samples containing 0, 1, 3, 5, and 10 wt.% Mo₂C were produced and analyzed using XRD, FESEM, hardness testing, tensile testing, and pin-on-disk wear testing. The results indicated that in the Al – 5% Mo₂C composition, the reinforcement particles were uniformly distributed, leading to improved hardness, tensile strength, and wear resistance. However, at 10 wt.% Mo₂C, agglomeration occurred, reducing the mechanical properties. Microscopic analysis showed that Mo₂C altered the composite’s morphology, reduced grain size, and enhanced bonding between the reinforcement particles and the aluminum matrix. Additionally, increasing the Mo₂C content resulted in decreased ductility. Overall, the production of aluminum-Mo₂C composite via stir casting was successful, with the 5 wt.% Mo₂C composition exhibiting the best mechanical properties. This study demonstrated that Mo₂C improves engineering properties by inhibiting grain growth and restricting dislocation movement.
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