Conference Papers

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Subject: search.filters.subject.Metal matrix composite

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    The influence of microwave sintering on the tribological performance of powder metallurgy based aluminum cenospheres composites
    (Trans Tech Publications Ltd ttp@transtec.ch, 2015) Ananda Kumar, M.G.; Seetharamu, S.; Sampath Kumaran, P.; Nayak, J.
    The Metal Matrix Composites (MMCs) especially Aluminum based systems have unique advantages of having superior mechanical, chemical and electrical properties, in addition to light weight and high stiffness. In this work, composites comprising of Aluminum with varied concentrations of Cenospheres as reinforcement was produced by Powder Metallurgy (PM) route. The densification of the composites was effected both by conventional and Microwave (MW) sintering techniques. The microstructures of the sintered samples were observed through scanning electron microscope (SEM) and phases by x ray diffraction technique (XRD), followed by evaluation of tribological parameter namely slide wear behavior and solid particle erosion resistance. The densities and the Brinell hardness values for the samples were also evaluated. The results showed that microwave sintered samples exhibited higher hardness, lower erosion and slide wear loss. © (2015) Trans Tech Publications, Switzerland.
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    Comparison of Wear Behaviour of Al–12.5Si Alloy Reinforced with ZrO2 Using Spray Deposition and Stir Casting Technique
    (Springer Science and Business Media Deutschland GmbH, 2023) Patil, I.S.; Rao, S.S.; Herbert, M.A.
    Aluminium silicon alloy materials are commonly used in aerospace and automotive engineering applications due to their enhanced stiffness, excellent wear resistance and lightweight. The measurement of wear properties for these combinations is very tangled. This can differ under different operating conditions. Dry sliding wear properties of Al–12.5Si with reinforced zirconium oxide matrix composite have been investigated using stir casting and spray deposition methods. The weight fraction of ZrO2 is 15%. The influence of applied nominal load (10 to 60 N) was investigated using the design of experiments. Wear properties of the hybrid composites were studied using pin-on-disc machine. The study found that the wear behaviour was improved by increasing the composition the zirconium oxide in alloy silicon matrix in both stir casting and spray forming techniques. The spray forming method showed lesser wear rate compared with stir casting method. Microstructure of the developed hybrid composites was analysed using scanning electron microscope (SEM). The developed hybrid composite samples have twice the improvement in wear resistance using spray deposition. The influence of reinforced zirconium oxide in aluminium silicon metal matrix on the wear properties using spray forming method is highlighted. This study shows that the wear resistance of the metal matrix composites can be improved by increasing the ZrO2 composition in aluminium silicon matrix. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.