Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/519734
Title: Wear Behaviour of Nickel Aluminides Reinforced Aluminium metal matrix composites
Researcher: Abuthakir, J
Guide(s): Subramanian, R
Keywords: Engineering
Engineering and Technology
Engineering Mechanical
interfacial
intermetallic
Metal Matrix Composites
University: Anna University
Completed Date: 2023
Abstract: A new class of Al Metal Matrix Composites (MMCs) reinforced with in situ intermetallic reinforcements have emerged with superior wear resistance, higher tensile strength and corrosion resistance compared to Al MMCs reinforced with ceramic particulates/fibres. This enhancement is due to better interfacial bonding achieved by intermetallic reinforcements with the Al matrix. Several studies on wear behavior have been carried out on various Al alloys reinforced with nickel aluminides, titanium aluminides as well as other intermetallic reinforcements. Nickel aluminide reinforced Al MMCs have been extremely investigated (synthesized through Powder Metallurgy, Friction Stir Processing and various casting routes). In the present investigation, in-situ nickel aluminide reinforced AA6061 Al MMCs were synthesized via stir casting. Ni particles were added to Al melt in varying wt% (0.5, 1.0 and 1.5) during stir casting. Ascast composites were subjected to solutionization and peak ageing (T6) treatments to form nickel aluminide reinforcements. newlineGrain refinement and hardness increased with an increase in Ni wt%. peak aged (T6) composites exhibited a higher degree of grain refinement as well as hardness than solutionized and as cast composites. X-ray Diffraction (XRD) studies confirmed the formation of nickel aluminide intermetallic in the composites. Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy studies (SEM/EDAX) revealed the distribution of nickel aluminides in the composites. Transmission Electron Microscopy (TEM) studies revealed the morphology and size of nickel aluminides formed. Wear investigations were carried out on the as cast ,solutionized and T6 composites at varying levels of laod(N), sliding speed(m/s) and Niwt% as per Taguchi s L9 array in the pin-on-disc tribometer at a constant sliding distance of 500m. newline
Pagination: xxvi,119p.
URI: http://hdl.handle.net/10603/519734
Appears in Departments:Faculty of Mechanical Engineering

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02_prelim pages.pdf926.93 kBAdobe PDFView/Open
03_contents.pdf384.58 kBAdobe PDFView/Open
04_abstracts.pdf121.78 kBAdobe PDFView/Open
05_chapter1.pdf50.71 kBAdobe PDFView/Open
06_chapter2.pdf764.73 kBAdobe PDFView/Open
07_chapter3.pdf473.96 kBAdobe PDFView/Open
08_chapter4.pdf3.83 MBAdobe PDFView/Open
09_annexures.pdf88.73 kBAdobe PDFView/Open
80_recommendation.pdf143.49 kBAdobe PDFView/Open
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