Corrosion behaviour of TiB2 reinforced aluminium based in situ metal matrix composites

Kumar, G.S. Pradeep; Keshavamurthy, R.; Kumari, P.D. Reena; Dubey, Chirag

doi:10.1016/j.pisc.2016.04.025

Cited by 35 publications

(7 citation statements)

References 13 publications

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“…From Figure 4a, even distribution and formation of corrosion deposits on preferential sites are evident. The dissolution of the oxide/metal interface, which produces a localized aggressive environment, can increase the rate at which blisters are formed on the aluminium matrix beneath the oxide passive layer [28]. Figure 4b also shows less attack on the specimen due to the dispersion of the silicon carbide particles in the matrix, thereby preventing the dissolution of the composite by the aggressive ions available in the test chloride medium [29].…”

Section: Micrographs Of the Corroded Specimensmentioning

confidence: 98%

Studies on corrosion behaviour of sintered aluminium based composites in chloride environment

et al. 2021

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Aluminium matrix composites have been developed to replace other conventional engineering materials in specific industries where enhanced properties are required. The corrosion susceptibility of sintered unreinforced aluminium and composites in chloride medium (AMCs) were studied. The powders of pure as-received aluminium (matrix) and particles of ferrotitanium and silicon carbide particles were homogeneously dispersed using ball milling technique. Powder metallurgy route was utilised for consolidating the milled powders into a sintered compact. Microstructural examination of the compacted pure aluminium and composites confirmed an even distribution of the reinforcements in the aluminium matrix. The produced composites also recorded an improved corrosion resistance in a corrosive medium of 3.5 wt.% laboratory prepared sodium chloride, from the potentiodynamic polarization and chronoamperometry (potentiostatic) tests. The corroded specimens were further assessed for pitting using a field emission scanning electron microscope (FE-SEM). The resistance of the fabricated samples to corrosion was improved upon the addition of TiFe and SiC reinforcements.

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Section: Micrographs Of the Corroded Specimensmentioning

confidence: 98%

Studies on corrosion behaviour of sintered aluminium based composites in chloride environment

et al. 2021

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“…While increasing the reinforcement weight percentage from 4 to 12, oxide layers formed over the AA6063 matrix surface reduced the weight loss. The oxide film guards the basic surface from extra corrosion outbreak [35]. Because of the above-mentioned reasons, the weight loss of AA6063-12wt.%Nano AlN composite is less when compared to other composites.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Effect of Nanoaluminium Nitride Ceramic Particles on Microstructure, Mechanical Wear, and Machining Behavior of Al‐Si‐Mg Alloy Matrix Composites Produced by Bottom Pouring Type Stir Casting Route

Meignanamoorthy¹,

Mohanavel

Velmurugan

et al. 2022

Journal of Nanomaterials

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Aluminium alloy strengthened with the ceramic particle is widely utilized for numerous engineering usages owing to its less weight, and superior mechanical and tribological behavior. The purpose of this research is to manufacture AA6063-Nano AlN composites via stir casting (SC) process and to examine the mechanical, tribological, electrical, and thermal and CNC drilling behavior. Nano AlN was mixed with AA6063 at 4, 8, and 12 wt.%. The occurrence and dispersal of Nano AlN particles in AA6063 matrix were inspected via Scanning Electron Microscope (SEM). The density and porosity were explored. The mechanical studies on microhardness, tensile strength and yield strength, flexural strength, and compressive strength have been done. SEM fractographic examination was made on the tensile fracture samples. The thermal conductivity, electrical resistivity and electrical conductivity, and salt spray corrosion analysis were made on the produced composites. The tribological behavior of the composites was studied using numerous parameters, reinforcement wt.%, load (L), sliding velocity (SV), and sliding distance (SD). The worn surface examination was done via SEM. The CNC drilling behavior was done at different parameter speed (S), feed (F), and depth of cut (DOC). Experiments were carried out according to the L9 orthogonal array (OA). Optimal process parameter to attain higher material removal rate (MRR) and least surface roughness (SR) was identified via Grey Relational Analysis (GRA). ANOVA outcomes revealed that feed rate is the foremost noteworthy parameter (45.89%) influencing MRR and SR.

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“…Al6061 is widely used for structural fabrication applications due to its reliable strength, weldability, and corrosion resistance [3]. The heat-treatable 6061 aluminium alloy has replaced the most commonly used matrix alloys of the MMCs [5].…”

Section: Introductionmentioning

confidence: 99%

Investigation of mechanical and wear behaviour of graphene reinforced aluminium alloy 6061 metal matrix composite

Kumar¹,

Kumar²,

Magarajan³

2020

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Owing to its outstanding mechanical and thermal properties, graphene has shown enormous potentials as an improvement material for composites. This paper investigates the properties of graphene-reinforced 6061 aluminium alloy Metal Matrix Composites (MMCs) with varying weight percentages (5 and 10 wt.% graphene) of reinforcement. Energy Dispersive Spectroscopy (EDS) and Scanning Electron Microscope (SEM) studies of the MMC confirm the presence and distribution of graphene particles in the Al6061 matrix materials. Mechanical properties such as tensile strength, hardness, and impact strength of MMCs were studied and assessed. Tensile and impact strength of the MMC's increased from 25 to 60 % by the addition of 10 wt.% graphene in aluminium 6061 alloys. The percentage of elongation diminished with the addition of reinforcement in the matrix. The most significant improvement in hardness can be found in additional graphene particles. Wear-test had been performed using the pin-on-disc machine at 10 N load. It was observed that the tribological behaviour of the composite improved after the addition of graphene in Al6061.

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Corrosion behaviour of TiB2 reinforced aluminium based in situ metal matrix composites

Cited by 35 publications

References 13 publications

Studies on corrosion behaviour of sintered aluminium based composites in chloride environment

Studies on corrosion behaviour of sintered aluminium based composites in chloride environment

Effect of Nanoaluminium Nitride Ceramic Particles on Microstructure, Mechanical Wear, and Machining Behavior of Al‐Si‐Mg Alloy Matrix Composites Produced by Bottom Pouring Type Stir Casting Route

Investigation of mechanical and wear behaviour of graphene reinforced aluminium alloy 6061 metal matrix composite

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