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Issue: May 2023

Volume 8 | Issue 5

Impact factor: 8.15

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Paper Title: Effect of Graphite on Wear and Strength Properties of Hybrid Aluminium Matrix Composites
Authors Name: Mohammed Naveed , Sameer Patel S B
Unique Id: IJSDR2305054
Published In: Volume 8 Issue 5, May-2023
Abstract: Metal matrix composites (MMCS) have attracted considerable attention recently because of their potential advantages over monolithic alloys. The MMCS are commonly reinforced with high strength, high modulus, and brittle ceramic phases, which may be in the form of fiber, whiskers, or particulates. The addition of ceramic reinforcement to a metal matrix improves strength and stiffness, but at the expense of ductility. Compared to the continuous fiber-reinforced composites, particulate reinforced MMCS offer several advantages such as improved anisotropy, ease of fabrication, and lower cost. In light of this fact, the present project report describes the fabrication of Al6061 based hybrid matrix composites by stir casting technique. Since the presence of only hard particulate reinforcement in composite leads to poor surface finish and higher tool wear. Therefore composites were prepared with both hard reinforcement (SiC) and soft reinforcement (Gr).The content of SiC in Al6061 melt was maintained constant and Gr was varied from 1wt% to 4wt%, in steps of 1wt% and characterize their macro hardness, dry sliding wear and corrosive wear resistance properties. Al6061-SiC-Gr hybrid composites have been successfully produced by vortex method. Microstructure studies clearly revealed uniformity in the distribution of reinforcements and excellent bond between the matrix and the reinforcement. Macro hardness of Al6061 based hybrid composites is higher when compared with that of the matrix alloy. Increased content of hard reinforcement in the hybrid composites leads to enhancement in macro hardness of the hybrid composites. With increase in graphite content there was declination in macro hardness. Material loss due to adhesive wear of Al6061 based hybrid composites is lower when compared with that of the matrix alloy. Increased content of Gr reinforcement in the hybrid composites leads to enhancement in adhesive wear resistance of the hybrid composites. Coefficient of friction of hybrid composites is lower than that of the matrix alloy. Increased content of hard reinforcement for a given volume fraction of soft reinforcement leads to lower coefficient of friction. There was fluctuation in the specimen-disc temperature with increase in sliding speed , load and sliding velocity. However drop in temperature was found in hybrid composites when compared to that of base material.
Keywords: Metal Matrix Composites, Vortext Stir Casting, Macrohardness, Sliding Wear Resistance.
Cite Article: "Effect of Graphite on Wear and Strength Properties of Hybrid Aluminium Matrix Composites", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.8, Issue 5, page no.351 - 356, May-2023, Available :http://www.ijsdr.org/papers/IJSDR2305054.pdf
Downloads: 000222060
Publication Details: Published Paper ID: IJSDR2305054
Registration ID:206175
Published In: Volume 8 Issue 5, May-2023
DOI (Digital Object Identifier):
Page No: 351 - 356
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631

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