Microstructural characterization and mechanical properties of functionally graded Al2024/SiC composites prepared by powder metallurgy techniques

Erdemir, Fatih; Çanakçı, Aykut; Varol, Temel

doi:10.1016/s1003-6326(15)63996-6

Cited by 138 publications

(39 citation statements)

References 31 publications

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“…1-120 μm thick deposited layers [130,143]. In thick FGMs, gradients can cover 5-350 mm [26,56,144]. Also, the gradient of FGM can developed along one, two or even three different directions.…”

Section: According To the Fgm Scale And Dimensionsmentioning

confidence: 99%

Functionally graded materials classifications and development trends from industrial point of view

2019

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Over the last few years, many classifications have been proposed for functionally graded materials (FGMs). In this Paper, critical review of different available classifications for FGM based on their physical, structural and manufacturing characteristics are presented. Advantages and limitations of each fabrication method for use in a given application is correspondingly considered. In addition, new classifications based on gradation control and accuracy, residual stresses, specific energy consumption, environmental impact evaluated throughout the complete life cycle and manufacturing costs are proposed. These classifications mainly reflect the needs of both FGM designers and industrial manufacturers. Based upon the presented classifications and the recent advances in analysis and production techniques, new major directions for FGMs research are proposed.

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Section: According To the Fgm Scale And Dimensionsmentioning

confidence: 99%

Functionally graded materials classifications and development trends from industrial point of view

2019

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“…High toughness helps in withstanding dynamic loads, while better surface hardness helps in avoiding wear. Keeping such devices in view a new category of advanced and innovative metals are being developed and studied with the goal of achieving superior and reliable performance based on the function and application the materials can be designed [1][2][3]. Al, Cu, Zn and Mg alloys are most widely used as matrix in metal matrix composites(MMCs), of these, Al alloy used in aircraft structures, especially for wing and fuselage structures has good machining characteristics, high strength and fatigue resistance, based on its features like low weight to strength ratio and high heat conductivity it is used widely for rotating and reciprocating parts like piston, brake rotors, drive shafts and automobile engines.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and Mechanical Behavior of (Al/SiC) Functionally Graded Material using Powder Metallurgy Technique

Surya¹,

Prasanthi²

2019

IJITEE

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This research focuses on manufacturing and mechanical characterization of functionally graded materials using powder metallurgy techniques. Owing to its low density and high strength to weight ratio, pure aluminum with mesh size No. 200 is chosen as the matrix. Silicon carbide with mesh size No. 220, which has a wide range of applications due to its high hardness, is selected as reinforcement. Specimens of two functionally graded materials(FGM) with 4 layers (0%, 3%, 7%, 10%)(FGM-1) and 5 layers (10%, 20%, 30%, 40%, 50%) (FGM-2) are sintered by varying the SiC composition from layer to layer. From the microstructure, it is clearly evident that four layered specimens achieved more homogeneous mixture than five layered. Also, mechanical properties of four layered specimens attained better results than five layered specimens.

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“…A suitable material for production of a gear provides a good example of property distribution in materials. In a gear the surface must be hard a wear-resistant, where as the material must have high toughness in the interior keeping in mind the dynamic load to which the gear ought to be exposed to during its service life [20]. In the case of AMCs (Aluminium matrix composites), suitable for fabricating brake rotors and cylinders, piston, connecting rod, etc., it is reported uniformly distributed particles adversely affect the ductility and fracture-toughness properties [21].…”

Section: Introductionmentioning

confidence: 99%

Certain Aspects of Particle Distribution in Castings Formed in Rotating Moulds

Mohapatra¹,

Sarangi²,

Mohanty³

et al. 2019

ACSM

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The paper undertakes to demonstrate dispersal of particles with varied densities in a melt solidifying in a rotating mould, through laboratory experiment. Molten wax, wood and sand particles were considered for the purpose. Mixture of the three, in pre decided proportions, was poured into a refractory lined, split mould, rotating about its vertical axis at different speeds and the melt was allowed to solidify under the influence of the resulting centrifugal force. Slices of the casting so obtained, were examined using an optical microscope. Also, temperature and viscosity profiles of the melt, as well as the velocity and position of the particles in the melt at any instant of time, were analyzed, with the aid of relevant mathematical equations. The solidified wax was seen to have heavy sand-particles at the outer most surface and the thickness of the particle-rich-zone decreased with the increase of mould-rotational-speed. The analytical and experimental findings were in good agreement. The investigation, also, established significant contributions of combinations of 'speed of rotation' and 'mould size' towards graded distribution of particles in the solidified melt leading to gradation of properties in the resultant casting.

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Microstructural characterization and mechanical properties of functionally graded Al2024/SiC composites prepared by powder metallurgy techniques

Cited by 138 publications

References 31 publications

Functionally graded materials classifications and development trends from industrial point of view

Functionally graded materials classifications and development trends from industrial point of view

Manufacturing and Mechanical Behavior of (Al/SiC) Functionally Graded Material using Powder Metallurgy Technique

Certain Aspects of Particle Distribution in Castings Formed in Rotating Moulds

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